Question

Tell wether the ordered pair (5,-3) is a solution of the system -3x+2y=-21;-x-y=-2

Answer 1

(5,-3) is a solution of -x-y=-2

Explanation:

You just plug in the numbers in the equation

x=5 y=-3

-5(5)+2(-3)=-25-6 which doesn't equal -21

-5-(-3)=-5+3=-2