Question

X - y = 70 x/8 = y/3

Answer 1

x-y = 70

x/8 = y/3

70+y/8 = y/3

multiplicando tudo por 3

210+3y/8 = 3y

210+3y = 3y*8

210+3y = 24y

210 = 24y - 3y

210 = 21y

210/21 = y

y = 10