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 − y = 8
−x − y = −7


A)8 − y

B)−8 − y

C)8 + y

D) −8 + y

Answer 1

C

Answer 2

@TomC Explain her.Not give the answer.

Answer 3

Add y to both sides of the first equation
T