maths

3a=4k
15a=20k
7b=10k
14b=20k
6c=5k
24c=20k
a:b
=14:15
b:c
=24:14
列式------------------
a : b : c
14: 15
24 :14
_________
56 60 35

2007-05-15 22:33:11 補充：
改正:列式------------------a : b : c14:15.....24:14_________56:60:35

15:14:24