Question

{y=3x-4
{y=x-8

qualquer método
favor me ajudem

Answer 1

{y=3x-4
{y=x-8  .(-3)

{y=3x-4
{-3y=-3x + 24
___________
-2y=20 .(-1)
2y= -20
y= -10

y=x-8 
-10=x-8
-10 +8 =x
x= -2