Question

Quanto é?
{2x + 5y= -4
{4x - 3y = 24

Answer 1

2x =-4-5y
x =(-4-5y)/2

4*((-4-5y/2))-3y =24
4-10y-3y=24
-13y=20
y=-(20/13)

volta a x e faz:

x=(24/13)