Question

{x-2y=-2
{x+y=-5 me ajudem

Answer 1

x-2y=-2    ( -1 )

x+y=-5

——————-

-x+2y=2

x+y=-5

—————-

3y=-3

y=-1

Substituindo na equacao x+y=-5

x+( -1 )=-5

x-1=-5

x=-5+1

x=-4