Answer :

5/12 x 5/5= 25/60          4/5 x 12/12 = 48/60
2 5/12 = 2 25/60
1 4/5 = 1 48/60
2 25/60 + 1 48/60 = 3 73/60
 
= 4 13/60 
2 5/12 + 1 4/5= 2 25/60 + 1 48/60
2+1=3
25/60+48/60= 73/60
3 73/60=
4 13/60

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