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lyudal

Ответ:


Пошаговое объяснение:

6)440-8 минут, 660-? минут

(660*8)/440=12

7) 13

8)300-100%,36-?%

(36*100)/300=12

9)6*90+25:(816-75-716)*8

1действие 816-75-716=25

2действие 25:25*8=8

3действие 6*90=540

4действие 540+8=548




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