Question

5x-4y=6
-X+y=-1

Regra de cramer

Answer 1

Olá bom dia ☺

{5x-4y=6
{-x+y= -1---->×(4)


{5x-4y=6
{-4x+4y= -4
-----------------
x=2


5x-4y=6
5.2-4y=6
10-4y=6
-4y=6-10-->×(-1)
4y= -4
y= -4/4
y= -1

S={2, -1}