Question

Qual o valor de x e y?

x+5y=3 2x+3y=13

Answer 1

x +5y=3 x(-2) 2x+3y=13 -------------- -2x-10y=-6 2x +3y= 13 ---------------- -7y=7∴ y=-7/7∴ y=-1 x +5(-1)=3∴ x-5=3∴ x=3+5=8