Question

solve the system equation:
-2x-y=-3
y=-3x

Answer 1

-2x-(-3x)=-3
-2x+3x=-3
x=-3
y=-3(-3)
y=9
-2(-3)-9=-3
6-9=-3
-3=-3 CHECK

Answer 2

y = -3x
so -2x - (-3x) = -3
-2x + 3x = -3
x = -3
Sub this into the first equation and you get
y = -3 (-3) = 9

Overall, x = -3 and y = 9