Question

Solve by Substitution
2x-y=6
x+y=-3

Answer 1

You can choose from 3 methods (substitution, graphing, and elimination). But they already have elimination set up for you. Notice the positive y and the negative y. line up the two equations and the y variables cancel out and figure out X.

2x - y = 6
x +y =-3


3x = 3

x=1

then substitute: x+y =-3 1+y=-3 y=-4

Answer 2

Okay, thank you!