Question

me ajudem trabalho, y=0,5x x+y=60

Answer 1

y = 0,5x
x + y = 60

Substituir y

x + y = 60
x + 0,5x = 60
1,5x = 60
x = 60 / 1,5
x = 40

x + y = 60
40 + y = 60
y = 60 - 40
y = 20

Resposta : 
x = 40
y = 20