(58 6/41 + х) - 32 7/41 = 38 36/41
58 6/41 + х = 38 36/41 + 32 7/41 = 70 43/41
х = 70 43/41 - 58 6/41
х = 12 целых 37/41
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Проверка: (58 6/41 + 12 37/41) - 32 7/41 = 38 36/41
70 43/41 - 32 7/41 = 38 36/41
38 36/41 = 38 36/41