Question

Alguem sabe resolver correto 2x-y=3 x+2y=4

Answer 1

Resposta:

2x-y=3

x+2y=4 (-2)

2x-y=3

-2x-4y=-8

-5y=-5

y=-5/-5

y=1

x+2y=4

x+2.1=4

x=4-2

x=2