please help on 1 2 3 4 5 6 and 7

Mathematics
Tutor: None Selected Time limit: 1 Day

Nov 10th, 2014

1.   3/5+1/6=18/30+5/30 =23/30

2.  2/9+2/6=4/18+6/18=10/18 =5/9

3.  3/8+3/12=9/24+6/24=15/24=5/8

4.  1/4+1/6+3/4=3/12+2/12+9/12=14/12=7/6

5.  2/9+1/9+1/6=4/18+2/18+3/18=9/18=1/2

6.  1/ 4+1/4+5/12+1/12=1/4+1/4+6/12=1/4+1/4+1/2=1

7.  1/10+1/5+1/2=1/10+2/10+5/10=8/10=4/5


Nov 10th, 2014

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