4/5 :2 2/3 -3 : 3/4 1/6-1/15

Question

4/5 :2 2/3 -3 : 3/4
1/6-1/15

Answer 1

4/5:2=2/5 
2/3-3:3/4=-3 1/3 
1/6-1/15=1/10

Answer 2

4/5:2=4/5*1/2=4/10=2/5

2/3-3:3/4=2/3-3*4/3=2/3-4= - 3 целых 1/3

1/6-1/15=5/30-2/30=3/30=1/10