Solve 2y + 9 = 4.a)-5/2b)1/2c)2d)none of theseCorrect answer is option...
Given, 2y + 9 =4
Transposing '9' to R.H.S, we get
2y = 4-9
⇒ 2y = -5
Therefore, y = -5/2
Hence, option 'A' is correct.
Solve 2y + 9 = 4.a)-5/2b)1/2c)2d)none of theseCorrect answer is option...
To solve the equation 2y + 9 = 4, we need to isolate the variable y on one side of the equation.
Step 1: Subtract 9 from both sides of the equation.
2y + 9 - 9 = 4 - 9
2y = -5
Step 2: Divide both sides of the equation by 2.
2y/2 = -5/2
y = -5/2
Therefore, the solution to the equation 2y + 9 = 4 is y = -5/2.
Explanation:
- We start by subtracting 9 from both sides of the equation to isolate the term with the variable y.
- By subtracting 9 from both sides, the 9 on the left side of the equation cancels out, and we are left with 2y on the left side.
- On the right side of the equation, 4 minus 9 equals -5.
- So, the equation becomes 2y = -5.
- To solve for y, we divide both sides of the equation by 2.
- By dividing both sides by 2, the 2 on the left side cancels out, and we are left with y on the left side.
- On the right side, -5 divided by 2 equals -5/2.
- Therefore, the solution to the equation is y = -5/2.
The correct answer is option A, -5/2, because it represents the value of y that satisfies the equation 2y + 9 = 4.