Пошаговое объяснение:
1) 1 5/8 : 1,3 = 13/8 : 13/10 = 13/8 * 10/13 = 1/4 * 5/1 = 5/4
2) 5/4 : 0,39 = 5/4 : 39/100 = 5/4 * 100/39 = 5/1 * 25/39 = 125/39 = 3 8/39
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Пошаговое объяснение:
1) 1 5/8 : 1,3 = 13/8 : 13/10 = 13/8 * 10/13 = 1/4 * 5/1 = 5/4
2) 5/4 : 0,39 = 5/4 : 39/100 = 5/4 * 100/39 = 5/1 * 25/39 = 125/39 = 3 8/39