Question

{-2x-2y=-88
{2y+3y=100

Answer 1

{-2x-2y=-88

{2y+3y=100  ===> 5y = 100 ====> y = $\frac{100}{5}$ ==> y=20

-2x -2y = -88

-2x - 2.20 = -88

-2x - 40 = -88

-2x = -48

x = $\frac{-48}{-2}$

x = 24

Answer 2

usei o método de adição ordenada
x=32 v y=12