Question

X+2y= 1
-x+y=-2 me ajuda please​

Answer 1

x+2y=1

-x+y=-2

-x+y= -2

y= -2+x

x+2y=1

x+2.(-2x+x)=1

x-4x+2x=1

-x=1

x= -1

-(-1)+y= -2

1+y= -2

y= -2/1

y= -2

valor de x= -1 e y= -2