Автор - 6874558z

7.6:(-1 4/15) -(-9.75) :1 1/12​

Ответ

Проверено экспертом

Автор - prettypushkova

7,6 : (-1 4/15) - (-9,75) : 1 1/12 = 3.

1) 7,6 : (-1 4/15) = 76/10 : (-19/15) = 76/10 · (-15/19) = - (4·3)/(2·1) = - 12/2 = - 6

2) (-9,75) : 1 1/12 = (-975/100) : 13/12 = (-975/100) · 12/13 = - (75·3)/(25·1) = - (3·3)/(1·1) = - 9

3) - 6 - (-9) = - 6 + 9 = 9 - 6 = 3

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