Question

For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation?

-x - 2y = -4
3x + y = 12

Answer 1

substitute x=4-2y in place of x in the 2nd eq to get
3(4-2y) + y = 12

Answer 2

So the answer would be -2y + 4?

Answer 3

seems so

Answer 4

ok thanks