Answers

2014-10-03T09:55:31+08:00
2/5 +4/6 =12/30+20/30=32/30=16/15
3/4+5/8=6/8+5/8=11/8

5/7+1/2=10/14+7/14=17/14
3/7+2/6=18/42+14/42=16/21

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