Question

492. Найдите значения выражений: 2) 11-7-57-34; 3) 916-21-4160 10 30 5) 28-20-7-213): 100 1) 1935–6,12-22; 4) 203-6-21): H 15 15 6) 2923 - (4-2-). 25


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Answer 1

Пошаговое объяснение:

№1

1) 19 5/6 - 6 1/12 = 19 30/36 - 6 3/36 = 13 27/36

2) 13 27/36 - 2 7/9 = 13 27/36 - 2 28/36 = 12 63/36 - 2 28/36 = 10 35/36

№2

1) 11 7/10 - 5 7/30 = 11 21/30 - 5 7/30 = 6 14/30 = 6 7/15

2) 6 7/15 - 3 4/15 = 3 3/15 = 3 1/5

№3

1) 9 14/15 - 2 1/5 = 9 14/15 - 2 3/15 = 7 11/15

2) 7 11/15 - 4 7/10 = 7 22/30 - 4 21/30 = 3 1/30

№4

1) 6 - 2 1/6 = 5 6/6 - 2 1/6 = 3 5/6

2) 20 3/8 - 3 5/6 = 20 9/24 - 3 20/24 = 19 33/24 - 3 20/24 = 16 13/24

№5

1) 7 - 2 8/15 = 6 15/15 - 2 8/15 = 4 7/15

2) 28 1/20 - 4 7/15 = 28 3/60 - 4 28/60 = 27 63/60 - 4 28/60 = 23 35/60 = 23 7/12

№6

1) 4 - 2 1/5 = 3 5/5 - 2 1/5 = 1 4/5

2) 29 3/25 - 1 4/5 = 29 3/25 - 1 20/25 = 28 28/25 - 1 20/25 = 27 8/25