Question

calcule os valores de x e y, dado: x/12 = y/7 e x-y=15

Answer 1

x/y = 12/7

x-y/y = 12-7/7

15/y = 5/7 ===> :(5)

3/y =1/7

y = 21 ✓

x= 15+y= 15+21= 36 ✓