Пошаговое объяснение:
3. 1/5 + 1. 9/13 * 3. 5/7 = 3. 1/5 + 22/13 * 26/7 =
3. 1/5 + 22/1 * 2/7 = 3. 1/5 + 44/7 =
3. 1/5 + 6. 2/7 = 3. 7/35 + 6. 10/35 = 9. 17/35
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Пошаговое объяснение:
3. 1/5 + 1. 9/13 * 3. 5/7 = 3. 1/5 + 22/13 * 26/7 =
3. 1/5 + 22/1 * 2/7 = 3. 1/5 + 44/7 =
3. 1/5 + 6. 2/7 = 3. 7/35 + 6. 10/35 = 9. 17/35