Question

Resolva a equação {2x+y=6} {2x+3y=2}

Answer 1

{2x+y=6
{2x+3y=2
2x+y=6.(-3)
{-6x-3y=-18
{2x+3y=2
-4y=-16.(-1)
4y=16
y=16/4
y=4
2x+3y=2
2x+3.4=2
2x+12=2
2x=2-12
2x=-10
x=-10/2
x=-5
S={(-5, 4)}