Ответ:

а)

1) 2/3 (умножал на 2,5,10) = 4/6 = 10/15 = 20/30

2) 3/8 (3,7,9) = 9/24 = 21/56 = 27/72

3) 2/7 (4,5,8) = 8/28 = 10/35 = 16/56

4) 5/6 (2,6,7) = 10/12 = 30/36 = 35/42

5) 7/9 (3,5,10) = 21/27 = 35/45 = 70/90

6) 7/12 (4,8,9) = 28/48 = 56/96 = 63/108

б)

1) 48/60 (2,6,12) = 24/30 = 8/10 = 4/5

2) 36/72 (3,6,9) = 12/24 = 6/12 = 4/8

3) 48/84 (2,3,4) = 24/42 = 16/28 = 12/21

4) 96/120 (4,6,12) = 24/30 = 16/20 = 8/10

5) 30/110 (2,5,10) = 15/55 = 6/22 = 3/11

6) 28/56 (2,4,7) = 14/28 = 7/9 = 4/8

Пошаговое объяснение:

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