Question

решите 668 пожалуйста
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Answer 1

Ответ:

Пошаговое объяснение:

1) = -2/9 + 2/9 - 3/4 = -3/4

2) = 4/7 - 5/11 + 3/7 = 1 - 5/11 = 6/11

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

4) = 3/8 - 1/9 + 5/8 = 1 - 1/9 = 8/9

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

6) = 6 5/8 - 1 3/4 + 2 3/8 = 9 - 1 3/4 = 7 1/4