Question

7×-4y=22
2×-4×=-8
Reponde aí favor​

Answer 1

Resposta:

a={6,5}

Explicação passo-a-passo:

{7x-4y}=22

{2x-4y}=-8

{7x+4y}=-22

{2x-4y}=-22

{2x-4y=-8

-5x=-30.(-1)

5x=30

X=30/5

=6

{2x-4y}=-8

{2.6-4y}=-8

{12-4y}=-8

-4y=20

y=20/4

y=5