529. Найдите значения выражений: 3 у 2 в) за 1): 1) 2855 2 3- +1 15 2) : - 6 4 1 7 4 + 10 5 3) 4 :1 2 4) 1 :1 10 15 : :(11 6) 1-9 5) 3 2 + 5 3 ) 35 8 16 4 7) (11 2 7 5 :3=; 12 76):3 7 8) 8 12 8 6
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Ответ:
1) 2 1/6 : (8 3/4 - 5 1/2) = 13/6 : (35/4 - 22/4) = 13/6 * 4/13 = 2/3
2) 3 17/20 : (3 2/5 + 1 11/15) = 77/20 : (51/15 + 26/15) = 77/20 * 15/77 = 3/4
3) (4 3/5 - 2 1/5) : 1 1/10 = (23/5 - 11/5) : 11/10 = 12/5 * 5/11 = 12/11 = 1 1/11
4) (1 7/10 + 4/5) : 1 7/8 = (17/10 + 4/5 ) : 15/8 = 25/10 * 8/15 = 20/15 = 1 1/3
5)3 1/8 : 15/16 - 1/4 = 25/8 * 16/15 - 1/4 = 16/12 - 3/12 = 13/12 = 1 1/12
6) 1 9/35 : (1 1/5 + 2/3) = 44/35 : (6/5 + 2/3) =44/35 * 15/28 = 33/47
7) (11 5/8 + 7 1/6) : 3 5/12 = (93/8 + 43/6) : 41/12 = 315/16 * 12/41 = 941/121 =
7 94/121
8) (8 7/12 - 2 5/8) : 2 1/6 + (103/12 - 21/8) : 13/6 =143/24 * 6/13 = 11
Я очень надеюсь, что все правильно. (Т-Т)