Вычислите: 3/8 : 2/5 4/25 : 8/15 2/5 : 4/5 8/45 : 4/15 1/10 : 3 4/19 : 2 3/16 : 4

Question

Вычислите:

3/8 : 2/5

4/25 : 8/15

2/5 : 4/5

8/45 : 4/15

1/10 : 3

4/19 : 2

3/16 : 4

Answer 1

Решение на фотографии

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Answer 2

1) 3/8 : 2/5 = 3/8 * 5/2 = 0,94
2) 4/25 : 8/15 = 4/25 * 15/8 = 60/200 = 0,3
3) 2/5 : 4/5 = 2/5 * 5/4 = 2/4  = 0,5
4) 8/45 : 4/15 = 8/45 * 15/4 = 2/3 = 0,66
5) 1/10 : 3 = 1/10 * 1/3 = 1/30 = 0,033
6) 4/19 : 2 = 4/16 * 1/2 = 2/16 = 0,105
7) 3/16 :4 = 3/16 * 1/4 = 3/64 = 0,05