Question

me ajudem pfvr {×/2+2y=3
{×-y=-9​

Answer 1

Resposta:

x/2+2y=3

x-y=-9

-y=-9-x

y=+9+x

x/2+2.(9+x)=3

x/2+18+2x=3 . (2)

x + 36+4x=6

5x=-36+6

5x=-30

x=-30/5

x=-6

y=9 +(-6)

y=3

Resposta:

x=-6 e. y= 3