Question

2x + y = 4
-4x - 2y= -8
sistema linear

Answer 1

Resposta:

2×+y=4 .(-2)

-4×-2y=-8

-4×-2y=-8

-4×-2y=-8

-8×=-8 .(-1)

8×=8

×=8/8

×=1

2×+y=4

2+y=4

y=4-2

y=2