Ответ: 17/30
Пошаговое объяснение:
17/30 + 5/6 - 3/10 - 8/15
1) 17/30 + 5/6 = 17/30 + 25/30 = 42/30 = 7/5
2) 7/5 - 3/10 = 14/10 - 3/10 = 11/10
3) 11/10 - 8/15 = 33/30 - 16/30 = 17/30
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Ответ: 17/30
Пошаговое объяснение:
17/30 + 5/6 - 3/10 - 8/15
1) 17/30 + 5/6 = 17/30 + 25/30 = 42/30 = 7/5
2) 7/5 - 3/10 = 14/10 - 3/10 = 11/10
3) 11/10 - 8/15 = 33/30 - 16/30 = 17/30