Question

Which value of x makes the equation 2x + 7 = 15 true?

11
8
4
2

Answer 1

The answer is 4. 2(4)+7=15.

Answer 2

2x + 7 = 15
Get 2x by itself
Take away 7 from both sides.
2x = 8
Divide both sides by 2, or multiply both sides by 0.5.
x = 4.
Your answer is C.)