Пошаговое объяснение:
№1
3/8 : 1/4 = 3/8 * 4/1 = 3/2 * 1/1 = 3/2 = 3 : 2
№2
4 1/2 : 7,2 = 9/2 : 72/10 = 9/2 * 10/72 = 1/1 * 5/8 = 5/8 = 5 : 8
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Пошаговое объяснение:
№1
3/8 : 1/4 = 3/8 * 4/1 = 3/2 * 1/1 = 3/2 = 3 : 2
№2
4 1/2 : 7,2 = 9/2 : 72/10 = 9/2 * 10/72 = 1/1 * 5/8 = 5/8 = 5 : 8