For the following system, if you isolated y in the first equation to use the Substitution Method, what express?

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

2x + y = 8
−x − y = −5


8 + 2x

8 − 2x

−8 − 2x

−8 + 2x
3 answers