Ответ:
А = 2/3 * 3/4 * 4/5 и В = 9/7 * 7/5 * 5/3
1) 2/3 * 3/4 * 4/5 = 2/3 * 3/5 = 2/5
2) 9/7 * 7/5 * 5/3 = 9/7 * 2 целых 1/3 = 3
3) 2/5 + 2/5 = 4/5
4) 3 + 3 = 6
5) 4/5 * 6 = 4 целых 4/5
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Ответ:
А = 2/3 * 3/4 * 4/5 и В = 9/7 * 7/5 * 5/3
1) 2/3 * 3/4 * 4/5 = 2/3 * 3/5 = 2/5
2) 9/7 * 7/5 * 5/3 = 9/7 * 2 целых 1/3 = 3
3) 2/5 + 2/5 = 4/5
4) 3 + 3 = 6
5) 4/5 * 6 = 4 целых 4/5