(1/6+1/10+1/15) : (1/6+1/10-1/15) ---------------------------------------...

Question

(1/6+1/10+1/15) : (1/6+1/10-1/15)

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(1/2-1/3+1/4-1/5):1/4-1/6)

Answer 1

1.1/6+1/10+1/15=10+6+4/60=20/60=1/3

2,1/6+1/10-1/15=10+6-4/60=12/60=1/5

3.1/3:1/5=5/3

4.1/2-1/3+1/4=6-4+3/12=5/12

5.5/12-1/5=25-12/60=13/60

6.1/4-1/6=6-4/24=2/24=1/12

7.13/60:1/12=65

8.5/3:65=13/3=4 1/3