Question

i messed up the problem. its,
3(x-7) - x = 2x - 21
the choices are;
7.
-2.
infinitely many solutions.
no solution.

Answer 1

@nfcfox

Answer 2

is it still 7?

Answer 3

@allismith2953 Yes because if we plug in 7 on both sides, we get 3(7-7)-7=2(7)-21
Which is 3(0)-7=14-21 which is -7=-7 therefore it will be 7. It's not 2 because they won't equal each other, the answer does exist and it is not infinite answers.