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 Page 1


Chapter 10: Equations 
 
 
PRACTICE SET 26 [PAGE 51] 
Practice Set 26 | Q 1 | Page 51 
Different mathematical operations are given in the two rows below. Find out the number 
you get in each operation and make equations. 
16 ÷ 2; 5 × 2; 9 + 4; 72 ÷ 3; 4 + 5; 8 × 3; 19 - 10; 10 - 2; 37 - 27; 6 + 7 
 
SOLUTION 
16 ÷ 2 = 8 
 
5 × 2 = 10 
 
9 + 4 = 13 
 
72 ÷ 3 = 24 
 
4 + 5 = 9 
 
8 × 3 = 24 
 
19 - 10 = 9 
 
10 - 2 = 8 
 
37 - 27 = 10 
 
6 + 7 = 13 
 
So, 
16 ÷ 2 = 10 - 2 
 
5 × 2 = 37 - 27 
 
9 + 4 = 6 + 7 
 
72 ÷ 3 = 8 × 3 
 
4 + 5 = 19 - 10 
PRACTICE SET 27 [PAGE 55] 
 
Practice Set 27 | Q 1.1 | Page 55 
Rewrite the following using a letter. 
Page 2


Chapter 10: Equations 
 
 
PRACTICE SET 26 [PAGE 51] 
Practice Set 26 | Q 1 | Page 51 
Different mathematical operations are given in the two rows below. Find out the number 
you get in each operation and make equations. 
16 ÷ 2; 5 × 2; 9 + 4; 72 ÷ 3; 4 + 5; 8 × 3; 19 - 10; 10 - 2; 37 - 27; 6 + 7 
 
SOLUTION 
16 ÷ 2 = 8 
 
5 × 2 = 10 
 
9 + 4 = 13 
 
72 ÷ 3 = 24 
 
4 + 5 = 9 
 
8 × 3 = 24 
 
19 - 10 = 9 
 
10 - 2 = 8 
 
37 - 27 = 10 
 
6 + 7 = 13 
 
So, 
16 ÷ 2 = 10 - 2 
 
5 × 2 = 37 - 27 
 
9 + 4 = 6 + 7 
 
72 ÷ 3 = 8 × 3 
 
4 + 5 = 19 - 10 
PRACTICE SET 27 [PAGE 55] 
 
Practice Set 27 | Q 1.1 | Page 55 
Rewrite the following using a letter. 
The sum of a certain number and 3. 
 
SOLUTION 
Let a certain number be x.  
 
? Sum of a certain number and 3 = x + 3 
Practice Set 27 | Q 1.2 | Page 55 
Rewrite the following using a letter. 
The difference obtained by subtracting 11 from another number. 
 
SOLUTION 
Let another number be x. 
? Difference obtained by subtracting 11 from another number = x – 11 
Practice Set 27 | Q 1.3 | Page 55 
Rewrite the following using a letter. 
The product of 15 and another number. 
 
SOLUTION 
Let another number be x.  
? Product of 15 and another number = 15 × x = 15x  
Practice Set 27 | Q 1.4 | Page 55 
Rewrite the following using a letter. 
Four times a number is 24. 
 
SOLUTION 
Let the number be x. 
 
Four time a number = 24 
 
? 4 × x = 24 
 
? 4x = 24  
Practice Set 27 | Q 2.1 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
x + 9 = 11 
 
SOLUTION 
Subtract 9 from both sides 
Page 3


Chapter 10: Equations 
 
 
PRACTICE SET 26 [PAGE 51] 
Practice Set 26 | Q 1 | Page 51 
Different mathematical operations are given in the two rows below. Find out the number 
you get in each operation and make equations. 
16 ÷ 2; 5 × 2; 9 + 4; 72 ÷ 3; 4 + 5; 8 × 3; 19 - 10; 10 - 2; 37 - 27; 6 + 7 
 
SOLUTION 
16 ÷ 2 = 8 
 
5 × 2 = 10 
 
9 + 4 = 13 
 
72 ÷ 3 = 24 
 
4 + 5 = 9 
 
8 × 3 = 24 
 
19 - 10 = 9 
 
10 - 2 = 8 
 
37 - 27 = 10 
 
6 + 7 = 13 
 
So, 
16 ÷ 2 = 10 - 2 
 
5 × 2 = 37 - 27 
 
9 + 4 = 6 + 7 
 
72 ÷ 3 = 8 × 3 
 
4 + 5 = 19 - 10 
PRACTICE SET 27 [PAGE 55] 
 
Practice Set 27 | Q 1.1 | Page 55 
Rewrite the following using a letter. 
The sum of a certain number and 3. 
 
SOLUTION 
Let a certain number be x.  
 
? Sum of a certain number and 3 = x + 3 
Practice Set 27 | Q 1.2 | Page 55 
Rewrite the following using a letter. 
The difference obtained by subtracting 11 from another number. 
 
SOLUTION 
Let another number be x. 
? Difference obtained by subtracting 11 from another number = x – 11 
Practice Set 27 | Q 1.3 | Page 55 
Rewrite the following using a letter. 
The product of 15 and another number. 
 
SOLUTION 
Let another number be x.  
? Product of 15 and another number = 15 × x = 15x  
Practice Set 27 | Q 1.4 | Page 55 
Rewrite the following using a letter. 
Four times a number is 24. 
 
SOLUTION 
Let the number be x. 
 
Four time a number = 24 
 
? 4 × x = 24 
 
? 4x = 24  
Practice Set 27 | Q 2.1 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
x + 9 = 11 
 
SOLUTION 
Subtract 9 from both sides 
x + 9 = 11 
? x + 9 - 9 = 11 - 9 (Subtract 9 from both sides) 
? x + 0 = 2 
? x = 2  
Practice Set 27 | Q 2.2 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
x - 4 = 9 
 
SOLUTION 
Add 4 to both sides 
x - 4 = 9  
? x - 4 + 4 = 9 + 4 (Add 4 to both sides) 
? x + 0 = 13 
? x = 13  
Practice Set 27 | Q 2.3 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
8x = 24 
 
SOLUTION 
 
Practice Set 27 | Q 2.4 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
 
Page 4


Chapter 10: Equations 
 
 
PRACTICE SET 26 [PAGE 51] 
Practice Set 26 | Q 1 | Page 51 
Different mathematical operations are given in the two rows below. Find out the number 
you get in each operation and make equations. 
16 ÷ 2; 5 × 2; 9 + 4; 72 ÷ 3; 4 + 5; 8 × 3; 19 - 10; 10 - 2; 37 - 27; 6 + 7 
 
SOLUTION 
16 ÷ 2 = 8 
 
5 × 2 = 10 
 
9 + 4 = 13 
 
72 ÷ 3 = 24 
 
4 + 5 = 9 
 
8 × 3 = 24 
 
19 - 10 = 9 
 
10 - 2 = 8 
 
37 - 27 = 10 
 
6 + 7 = 13 
 
So, 
16 ÷ 2 = 10 - 2 
 
5 × 2 = 37 - 27 
 
9 + 4 = 6 + 7 
 
72 ÷ 3 = 8 × 3 
 
4 + 5 = 19 - 10 
PRACTICE SET 27 [PAGE 55] 
 
Practice Set 27 | Q 1.1 | Page 55 
Rewrite the following using a letter. 
The sum of a certain number and 3. 
 
SOLUTION 
Let a certain number be x.  
 
? Sum of a certain number and 3 = x + 3 
Practice Set 27 | Q 1.2 | Page 55 
Rewrite the following using a letter. 
The difference obtained by subtracting 11 from another number. 
 
SOLUTION 
Let another number be x. 
? Difference obtained by subtracting 11 from another number = x – 11 
Practice Set 27 | Q 1.3 | Page 55 
Rewrite the following using a letter. 
The product of 15 and another number. 
 
SOLUTION 
Let another number be x.  
? Product of 15 and another number = 15 × x = 15x  
Practice Set 27 | Q 1.4 | Page 55 
Rewrite the following using a letter. 
Four times a number is 24. 
 
SOLUTION 
Let the number be x. 
 
Four time a number = 24 
 
? 4 × x = 24 
 
? 4x = 24  
Practice Set 27 | Q 2.1 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
x + 9 = 11 
 
SOLUTION 
Subtract 9 from both sides 
x + 9 = 11 
? x + 9 - 9 = 11 - 9 (Subtract 9 from both sides) 
? x + 0 = 2 
? x = 2  
Practice Set 27 | Q 2.2 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
x - 4 = 9 
 
SOLUTION 
Add 4 to both sides 
x - 4 = 9  
? x - 4 + 4 = 9 + 4 (Add 4 to both sides) 
? x + 0 = 13 
? x = 13  
Practice Set 27 | Q 2.3 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
8x = 24 
 
SOLUTION 
 
Practice Set 27 | Q 2.4 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
 
SOLUTION 
 
Practice Set 27 | Q 3 | Page 55 
Given below are some equations and the values of the variables. Are these values the 
solutions to those equations? 
 
No Equation Value of the 
variable 
Solution 
(Yes/No) 
1 y - 3 = 11 y = 3 No 
2 17 = n + 7 n = 10   
3 30 = 5x x = 6   
4 m/2 = 14 m = 7   
 
SOLUTION 
 
No Equation  Value of the variable  
Solution(Yes / No) 
1 y - 3 = 11 y = 3 No 
2 17 = n + 7 n = 10 Yes 
3 30 = 5x x = 6 Yes 
4 m
2
 =14m
2
 = 14 m = 7   No 
Explanation: 
(1) When y = 3, 
LHS = y - 3 = 3 - 3 = 0 
RHS = 11 
Since LHS ? RHS, so y = 3 is not a solution of equation 
y - 3 = 11.  
(2) When n = 10, 
Page 5


Chapter 10: Equations 
 
 
PRACTICE SET 26 [PAGE 51] 
Practice Set 26 | Q 1 | Page 51 
Different mathematical operations are given in the two rows below. Find out the number 
you get in each operation and make equations. 
16 ÷ 2; 5 × 2; 9 + 4; 72 ÷ 3; 4 + 5; 8 × 3; 19 - 10; 10 - 2; 37 - 27; 6 + 7 
 
SOLUTION 
16 ÷ 2 = 8 
 
5 × 2 = 10 
 
9 + 4 = 13 
 
72 ÷ 3 = 24 
 
4 + 5 = 9 
 
8 × 3 = 24 
 
19 - 10 = 9 
 
10 - 2 = 8 
 
37 - 27 = 10 
 
6 + 7 = 13 
 
So, 
16 ÷ 2 = 10 - 2 
 
5 × 2 = 37 - 27 
 
9 + 4 = 6 + 7 
 
72 ÷ 3 = 8 × 3 
 
4 + 5 = 19 - 10 
PRACTICE SET 27 [PAGE 55] 
 
Practice Set 27 | Q 1.1 | Page 55 
Rewrite the following using a letter. 
The sum of a certain number and 3. 
 
SOLUTION 
Let a certain number be x.  
 
? Sum of a certain number and 3 = x + 3 
Practice Set 27 | Q 1.2 | Page 55 
Rewrite the following using a letter. 
The difference obtained by subtracting 11 from another number. 
 
SOLUTION 
Let another number be x. 
? Difference obtained by subtracting 11 from another number = x – 11 
Practice Set 27 | Q 1.3 | Page 55 
Rewrite the following using a letter. 
The product of 15 and another number. 
 
SOLUTION 
Let another number be x.  
? Product of 15 and another number = 15 × x = 15x  
Practice Set 27 | Q 1.4 | Page 55 
Rewrite the following using a letter. 
Four times a number is 24. 
 
SOLUTION 
Let the number be x. 
 
Four time a number = 24 
 
? 4 × x = 24 
 
? 4x = 24  
Practice Set 27 | Q 2.1 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
x + 9 = 11 
 
SOLUTION 
Subtract 9 from both sides 
x + 9 = 11 
? x + 9 - 9 = 11 - 9 (Subtract 9 from both sides) 
? x + 0 = 2 
? x = 2  
Practice Set 27 | Q 2.2 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
x - 4 = 9 
 
SOLUTION 
Add 4 to both sides 
x - 4 = 9  
? x - 4 + 4 = 9 + 4 (Add 4 to both sides) 
? x + 0 = 13 
? x = 13  
Practice Set 27 | Q 2.3 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
8x = 24 
 
SOLUTION 
 
Practice Set 27 | Q 2.4 | Page 55 
Find out which operation must be done on both sides of these equation in order to solve 
them. 
 
SOLUTION 
 
Practice Set 27 | Q 3 | Page 55 
Given below are some equations and the values of the variables. Are these values the 
solutions to those equations? 
 
No Equation Value of the 
variable 
Solution 
(Yes/No) 
1 y - 3 = 11 y = 3 No 
2 17 = n + 7 n = 10   
3 30 = 5x x = 6   
4 m/2 = 14 m = 7   
 
SOLUTION 
 
No Equation  Value of the variable  
Solution(Yes / No) 
1 y - 3 = 11 y = 3 No 
2 17 = n + 7 n = 10 Yes 
3 30 = 5x x = 6 Yes 
4 m
2
 =14m
2
 = 14 m = 7   No 
Explanation: 
(1) When y = 3, 
LHS = y - 3 = 3 - 3 = 0 
RHS = 11 
Since LHS ? RHS, so y = 3 is not a solution of equation 
y - 3 = 11.  
(2) When n = 10, 
RHS = n + 7 = 10 + 7 = 17 
LHS = 17 
Since LHS = RHS, so n = 10 is a solution of equation 
17 = n + 7.  
(3)  When x = 6,  
RHS = 5x = 5 × 6 = 30 
LHS = 30 
Since LHS = RHS, so x = 6 is a solution of equation 
30 = 5x. 
(4) When m = 7, 
 
Since LHS ? RHS, so m = 7 is not a solution of equation m/2 = 14 
Practice Set 27 | Q 4.1 | Page 55 
Solve the following equation: y - 5 = 1 
 
SOLUTION 
y - 5 = 1 
 
? y - 5 + 5 = 1 + 5 (Add 5 to both sides) 
 
? y + 0 = 6 
 
? y = 6 
 
Thus, the solution of the given equation is y = 6.  
Practice Set 27 | Q 4.2 | Page 55 
Solve the following equation: 8 = t + 5 
 
SOLUTION 
8 = t + 5 
? 8 - 5 = t + 5 - 5 (Subtract 5 from both sides) 
? 3 = t + 0 
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FAQs on Textbook Solutions: Equations - Mathematics Class 6 (Maharashtra Board)

1. What are equations, and why are they important in mathematics?
Ans. Equations are mathematical statements that assert the equality of two expressions, typically involving variables and constants. They are important because they help us understand relationships between different quantities and solve problems in various fields, including science, engineering, and finance.
2. How can I solve simple equations in Class 6?
Ans. To solve simple equations, you can follow these steps: first, isolate the variable by performing the same operation on both sides of the equation. For example, if you have x + 5 = 12, subtract 5 from both sides to find x = 7. Always check your solution by substituting it back into the original equation.
3. What are some common types of equations that students learn in Class 6?
Ans. In Class 6, students typically learn about linear equations, which involve variables raised to the first power. Common types include one-step equations (like x + 3 = 7) and two-step equations (like 2x - 4 = 10). Understanding these basics is crucial for tackling more complex equations later on.
4. How do I check if my solution to an equation is correct?
Ans. To check if your solution is correct, substitute the value of the variable back into the original equation. If both sides of the equation are equal after substitution, then your solution is correct. This process helps verify your work and ensures accuracy.
5. Can you explain the difference between equations and expressions?
Ans. Yes, equations and expressions are different. An expression is a combination of numbers, variables, and operations without an equality sign (e.g., 3x + 5). An equation, on the other hand, includes an equality sign, indicating that two expressions are equal (e.g., 3x + 5 = 11). Understanding this difference is essential for solving mathematical problems.
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