Ответ:вот
Пошаговое объяснение:
№2
1) 2/9 - (-1/6) = 2/9 + 1/6 = 4/18 + 3/18 = 7/18
2) -3/8 - (-7/10) = -3/8 + 7/10 = -15/40 + 28/40 = 13/40
№3
1) 4 1/3 - 5 2/7 = 4 7/21 - 5 6/21 = 4 7/21 - 4 27/21 = 20/21
2) -3 3/28 - 2 5/12 = -3 9/84 - 2 35/84 = -5 44/84 = -5 11/21
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Ответ:вот
Пошаговое объяснение:
Пошаговое объяснение:
№2
1) 2/9 - (-1/6) = 2/9 + 1/6 = 4/18 + 3/18 = 7/18
2) -3/8 - (-7/10) = -3/8 + 7/10 = -15/40 + 28/40 = 13/40
№3
1) 4 1/3 - 5 2/7 = 4 7/21 - 5 6/21 = 4 7/21 - 4 27/21 = 20/21
2) -3 3/28 - 2 5/12 = -3 9/84 - 2 35/84 = -5 44/84 = -5 11/21