Determine which equation below has a solution of x = 2.
A.
5x + 8 – 12x = –6x + 2x – 3
B.
6x + 4 – 12x = –10x + 18x – 3
C.
–4x – 6 + x = –2x + x – 10
D.
–3x – 8 + x = –4x + x – 10

Question

Determine which equation below has a solution of x = 2. 
A.
5x + 8 – 12x = –6x + 2x – 3
B.
6x + 4 – 12x = –10x + 18x – 3
C.
–4x – 6 + x = –2x + x – 10
D.
–3x – 8 + x = –4x + x – 10

anonymous · Answer

Plug 2 in for x for each answer, and see which one works. Can you test A to see if that works?

debbieg · Answer

Plug x=2 into each one, and see where you get a true equality statement.

Or better yet, SOLVE each equation and see for which one you get the solution x=2

anonymous · Answer

So.. it can't be a because it makes out -6 = -11?

debbieg · Answer

right. so try the next one.

anonymous · Answer

So is the answer c? because i did the work and i made it out to be -12=-12

debbieg · Answer

Looks right to me! :) good job. I would always check all 4 equations, just in case you made a mistake - it's a good double-check. But I agree, C is the correct answer. :)

anonymous · Answer

Thank you ^^