Question: Solve the following maths questions from Chapter 1:
1. Find the value of x if 3x + 5 = 17.
2. Solve the equation 2(4x - 3) = 10.
3. Calculate the perimeter of a rectangle with length 5 cm and width 3 cm.

Answer:

Finding the value of x in the equation 3x + 5 = 17:
To solve this equation, we need to isolate x on one side of the equation.
Subtract 5 from both sides:
3x + 5 - 5 = 17 - 5
3x = 12
Divide by 3:
x = 4

Solving the equation 2(4x - 3) = 10:
First, distribute the 2 on the left side of the equation:
8x - 6 = 10
Add 6 to both sides:
8x = 16
Divide by 8:
x = 2

Calculating the perimeter of a rectangle with length 5 cm and width 3 cm:
The perimeter of a rectangle is given by the formula: 2(length + width)
Given length = 5 cm and width = 3 cm
Perimeter = 2(5 + 3) = 2(8) = 16 cm
In summary, the value of x in the first equation is 4, the solution to the second equation is x = 2, and the perimeter of the rectangle is 16 cm.