Question

×-y=5
x+3y=9

respondem por favorrr​

Answer 1

Resposta: x=6     y=1

x-y=5 .(-1)

x+3y=9

-x+y=-5

x+3y=9 +

  4y=4

    y=1

x-y=5

x-1=5

x=5+1

x=6