Please help me out on number 14 15 and 16

Mathematics
Tutor: None Selected Time limit: 1 Day

Nov 11th, 2014

(14) 3+2+1= 6

(15)=5/30+4/6

1/6+2/3

get the L.C.M 

the L.C.M is 6=

answer= (1+4)/6

5/6

(16) 2/5+11/25

L.C.M is 25

therefore (10+11)/25

answer is =21/25

Nov 11th, 2014

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