Respostas

2013-10-08T14:25:15-03:00
3/8 
a) 9/24
b) 30/80
c) 6/16
d 54/144
6 4 6
2013-10-08T14:38:41-03:00

a)  24/8=3x3= 9/24
b) 80/8=10x3= 30/80
c) 6/3=2x8= 6/16
d 54/3=18x8= 54/144
3 4 3