Use substitution to solve the system of equation. 2x+2y=8 x+y=-2

Step-by-step explanation:

find the value of y in the second equation

x + y = - 2,

but y = - 2-x as well

so take the value that we have found for (x) into the first equation

2x + 2 (-2-x) = 8

-2x + - 4-2x = 8

-4x-4=8

-4x = 12

x=-3,

now just substitute x value into either equation

x + y = -2

-3 + y = - 2

y = 1