Respuesta :

x+2y=-7..... (1)
y=-6.....(2)
equation (2) into equation (1)
x+2y=-7
x+2(-6)=-7
x-12=-7
x=-7+12
x=5

Answer:

x = 5

Step-by-step explanation:

x+ 2(-6) = -7

x - 12 = -7

x = 5

check:

5 + 2(-6) = -7

-7 = -7