Question

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Answer 1

Пошаговое объяснение:

№1

1) 2 1/4 + 3 2/3 = 2 3/12 + 3 8/12 = 5 11/12

2) 8 1/2 - 1 2/5 = 8 5/10 - 1 4/10 = 7 1/10

3) 5 11/12 : 7 1/10 = 71/12 : 71/10 = 71/12 * 10/71 = 1/6 * 5/1 = 5/6

4) 5/6 * 1,2 = 5/6 * 1 2/10 = 5/6 * 12/10 = 1/1 * 2/2 = 2/2 = 1

№2

1) 1 9/16 * 3 1/5 = 25/16 * 16/5 = 5/1 * 1/1 = 5/1 = 5

2) 9 : 2 2/5 = 9 : 12/5 = 9 * 5/12 = 45/12 = 15/4 = 3 3/4

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

4) 6 2/3 - 3 3/4 = 6 8/12 - 3 9/12 = 5 20/12 - 3 9/12 = 2 11/12

5) 17 7/12 - 6 1/3 = 17 7/12 - 6 4/12 = 11 3/12 = 11 1/4

6) 2 11/12 : 11 1/4 = 35/12 : 45/4 = 35/12 * 4/45 = 7/3 * 1/9 = 7/27