Ответы на вопрос:
(х + 2 3/7) : 3 2/7 = 4/5 х + 2 3/7 = 4/5 * 3 2/7 = 4/5 * 23/7 = 92/35 = 2 22/35 х = 2 22/35 - 2 3/7 = 2 22/35 - 2 15/35 = 7/35 = 1/5 х = 1/5 (у - 2/15) : 1 5/6 = 2 1/5 у - 2/15 = 2 1/5 * 1 5/6 = 11/5 * 11/6 = 121/30 = 4 1/30 у = 4 1/30 + 2/15 = 4 1/30 + 4/30 = 4 5/30 = 4 1/6 у = 4 1/6
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