Respostas

2014-05-20T21:25:51-03:00
Letra C a resposta da fav. q ajuda obrg

2014-05-20T21:30:59-03:00
2/4=a/3
4a=6
A=6/4
A=1,5


1,5/3=4/b
1,5b=12
B=12/1,5
B=8

C/5=4/8
C=20/8
C=2,5

A+b+c= 12
1 5 1