Предмет: Алгебра, автор: Zhenya2001a

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Автор ответа: Аноним

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(1 1/55 * 3 -1,6)/((1,5+1/4)/18 1/3) - 5/21=15

1) 1 1/55 * 3=56/55 * 3=168/55

2) 168/55-1,6=16/11

3) 1,5+1/4=175/100

4) 175/100:18 1/3=21/220

5) 16/11:21/220=320/21

7) 320/21-5/21=15

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