Ответ:
Пошаговое объяснение:
= 2/7 - 3. 5/10 + 5/7 = 2/7 - 3. 1/2 + 5/7 =
4/14 - 3. 7/14 + 10/14 = 4/14 - 49/14 + 10/14 = -45/14 + 10/14 = -35/14 = -5/2 = -2. 1/2
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Ответ:
Пошаговое объяснение:
= 2/7 - 3. 5/10 + 5/7 = 2/7 - 3. 1/2 + 5/7 =
4/14 - 3. 7/14 + 10/14 = 4/14 - 49/14 + 10/14 = -45/14 + 10/14 = -35/14 = -5/2 = -2. 1/2