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Ответ:

Пошаговое объяснение:

1)

39 : (8+5) = 39 : 13 = 3

8*3 = 24 - первое число

5*3 = 15 - второе число

2)

1,5 : (8-5) = 1,5 : 3 = 0,5

8*0,5 = 4 - первое число

5*0,5 = 2,5 - второе число

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