Найти значение выражения -3/7 * 7/9 , 2 1/7 *3 1/9 , 3/7 :9/7 , 1 1/8 : 3/4 , 3 3/5 : 2 7/10 , 5/8 * 4/5 , 4 2/3 * 1 2/7 , 3/4 :9/8 , 1 5/7 : 1 1/7 , 3 1/5 : 2 2/15

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-3/7 * 7/9 = -21/63 = -1/3

2 1/7 3 1/9 = 15/7 28/9 = 420/63 = 20/3

3/7 : 9/7 = 3/7 * 7/9 = 21/63 = 1/3

1 1/8 : 3/4 = 9/8 : 3/4 = 9/8 * 4/3 = 36/24 = 3/2 = 1 1/2

3 3/5 : 2 7/10 = 18/5 : 17/10 = 18/5 * 10/17 = 36/17 = 2 2/17

5/8 * 4/5 = 20/40 = 1/2

4 2/3 1 2/7 = 14/3 9/7 = 126/21 = 6

3/4 : 9/8 = 3/4 * 8/9 = 24/36 = 2/3

1 5/7 : 1 1/7 = 12/7 : 8/7 = 12/7 * 7/8 = 84/56 = 3/2 = 1 1/2

3 1/5 : 2 2/15 = 16/5 : 32/15 = 16/5 * 15/32 = 48/160 = 3/10 = 0.3