Ответ:
9
Пошаговое объяснение:
3/7 +8 2/3 - 2/21 = 9/21 +8 14/21 - 2/21 = 9 2/21 - 2/21 = 9
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Ответ:
9
Пошаговое объяснение:
3/7 +8 2/3 - 2/21 = 9/21 +8 14/21 - 2/21 = 9 2/21 - 2/21 = 9
3/7+8целых2/3 = 9/21 + 182/21=191/21
191/21-2/21=189/21
189/21=9