Question 301841
-x-y=3
2x-y=-3

subtract the equations

-x-y-(2x-y)=3-(-3)

-x-y-2x+y=6

-3x=6
x=6/-3
x=-2

-x-y=3

-(-2)-y=3

+2-y=3
-y=3-2

-y=1

y=-1