Respostas

2014-05-18T09:52:24-03:00
Faz o mmc
b/4 = 2c/4
4b/4=2c
b=2c

2c+c = 90
3c = 90
c = 90/3
c=30

b=2c
b=2.30
b= 60

Resposta final:
c = 30 e b = 60