Respuesta :

1.for x it's 2x+5y=-1 you just do -5y on each side so you get 2x=-5y-1 then you divide it by 2 and it's x=-5/2-1/2
y=-1, x=2

2x+5y=-1
x=-2y

2(-2y)+5y=-1
-4y+5y=-1
y=-1


x+2y=0
x-2=0
x=2