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48/42 = 8/7

24/56 = 3/7

210/300 = 21/30 = 7/10

20 * 30 / 24 * 5 * 2 = 20 * 30 / 24 * 10 = 5 * 3 / 6 * 1 = 5 * 1 / 2 = 5/2

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58/29 , 170/100, 29/14 , 97/15

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7 1/2 gt; 6 5/9 = 7 9/18 и 6 10/18 = 135/18 и 118/18 , 135 gt; 118

100/17 gt; 260/51 = 300/51 и 260/51, 300 gt; 260

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5/18 + 7/18 = 12/18 = 2/3

9/25 + 21/25 = 30/25 = 6/5

2 17/30 + 1 23/30 = 3 40/30 = 3 4/3 = 4 1/3

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13/20 - 7/20 = 6/20 = 3/10

1 - 10/13 = 13/13 - 10/13 = 3/13

3 - 1 2/5 - 1/5 = 2 5/5 - 1 2/5 - 1/5 = 1 2/5

3 5/16 - 1 9/16 = 2 21/16 - 1 9/16 = 1 12/16 = 1 3/4

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7/9 + 3/4 = 28/36 + 27/36 = 55/36 = 1 19/36

7/8 + 5/24 = 21/24 + 5/24 = 26/24 = 13/12

7/20 + 12/25 = 35/100 + 48/100 = 83/100

1 4/15 + 2 3/20 + 1 5/6 = 1 16/60 + 2 9/60 + 1 50/60 = 4 75/60 = 4 15/12 = 4 5/4 = 5 1/4

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13/15 - 1/2 = 26/30 - 15/30 = 11/30

12 4/9 - 7 7/12 = 12 16/36 - 7 21/36 = 11 52/36 - 7 21/36 = 4 31/36

7 3/14 - 2 7/10 - 2 13/35 = 7 15/70 - 2 49/70 - 2 26/70 = 6 85/70 - 2 49/70 - 2 26/70 = 2 10/70 = 2 1/7