Номер 596 помогите пож!!!

Question

Номер 596 помогите пож!!!

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Answer 1

4/15 * 2=8/15         4/15:2= 4/15 * 1/2 = 2/15
4/15 * 3=4/5           4/15 : 3 = 4/15 * 1/3 = 4/45
10/21 * 7 = 10/3 = 3 1/3          10/21 : 7 = 10/21 * 1/7 = 10/147 

Answer 2

8
_
15

 2
__
15

12
__
15
 ?
__
15

70
__
27
 ?
__
27