Пошаговое объяснение:
а) 1 - 3/8 = 8/8 - 3/8 = 5/8
б) 4. 1/4 + 2. 4/5 = 4. 5/20 + 2. 16/20 = 6. 21/20 = 7. 1/20
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Пошаговое объяснение:
а) 1 - 3/8 = 8/8 - 3/8 = 5/8
б) 4. 1/4 + 2. 4/5 = 4. 5/20 + 2. 16/20 = 6. 21/20 = 7. 1/20