What value of x makes this equation true?
2(x – 5) – 7 = 12

a. 19/2

b. -5

c. 7

d. -15

Question

What value of x makes this equation true? 
2(x – 5) – 7 = 12

a.   19/2

b.   -5

c.     7

d.  -15

directrix · Answer

2(x – 5) – 7 = 12
Distribute the 2 over the (x-5) to get:

2x - 10  - 7 = 12

Question: What does -10 - 7 =   @iNeedHomeWorkHelp

directrix · Answer

Take a guess. I am not allowed to give out answers without input from the Asker.

anonymous · Answer

-17. Then what? :) d thanks for your help!

directrix · Answer

That is correct. So picking up from:

2x - 10  - 7 = 12
we get
2x - 17 = 12
Adding 17 to both sides of the equation gives:

2x - 17 + 17 = 12 + 17

2x = 12 + 17 ----> What is 12 + 17 @iNeedHomeWorkHelp

directrix · Answer

@iNeedHomeWorkHelp      --> What is 12 + 17 ?

anonymous · Answer

29.

directrix · Answer

Then, 

2x = 12 + 17
and
2x = 29
and
x = 29/2 -->  Did you write the correct option for A? @iNeedHomeWorkHelp