Question

x/y=4/3,sabendo-se x-y=30

Answer 1

(x-y)/y = (4 - 3)/3

30/y = 1/3

y = 30.3

y = 90

x - y = 30

x - 90 = 30

x = 30 + 90

x = 120

Answer 2

Vamos lá

x/y = 4/3

x - y = 30

x = y + 30

(y + 30)/y = 4/3

3y + 90 = 4y

y = 90

x = y + 30 = 120

S = (120, 90)