[email protected] , ответ добавлен 04.09.2017 в 20:39

А) 1 7/16 : (3 3/4 - 1 5/6) = 3/4
1) 3 3/4 - 1 5/6 = 3 9/12 - 1 10/12 = 2 21/12 - 1 10/12 = 1 целая 11/12
2) 1 7/16 : 1 11/12 = 23/16 : 23/12 = 23/16 * 12/23 = 12/16 = 3/4

б) 30 - ((4 3/4 - 2 1/2) : 1/8 + 5 3/7) = 6 целых 4/7
1) 4 3/4 - 2 1/2 = 4 3/4 - 2 2/4 = 2 целых 1/4
2) 2 1/4 : 1/8 = 9/4 * 8/1 = 9 * 2 = 18
3) 18 + 5 3/7 = 23 целых 3/7
4) 30 - 23 3/7 = 29 7/7 - 23 3/7 = 6 целых 4/7

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