Solve: 12-5x = 2x-9

Question

a. x = 3

b. x = -3

c. x = 1/3

d. X=-1/3

Answer 1

To solve the equation 12-5x = 2x-9:

First, combine like terms by adding 5x to both sides and adding 9 to both sides:

12 - 5x + 5x = 2x - 9 + 5x
12 = 7x - 9

Add 9 to both sides to isolate the variable term:

12 + 9 = 7x - 9 + 9
21 = 7x

Divide both sides by 7 to solve for x:

21 / 7 = 7x / 7
3 = x

Therefore, x = 3.

The answer is a. x = 3.