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9/16 (4/5 - y) - (-1/20 - y) ("ц" - целое число, скажем 1 целая 8/15 (пример))
-8/21 * (7/16 + y) - (1/6 + y)
2ц 1/7а + 3ц 9/14а = 11ц 1/7 - 1ц 1/21 = 2ц 3/14
-3ц 2/5b - 1ц 1/20b = -3ц 1/10 + 1ц 4/5 - 2ц 7/20
9/16 (4/5 - y) - (-1/20 - y) ("ц" - целое число, скажем 1 целая 8/15 (пример))
-8/21 * (7/16 + y) - (1/6 + y)
2ц 1/7а + 3ц 9/14а = 11ц 1/7 - 1ц 1/21 = 2ц 3/14
-3ц 2/5b - 1ц 1/20b = -3ц 1/10 + 1ц 4/5 - 2ц 7/20
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-8/21 * (7/16 + y) - (1/6 + y) = - 8*7/21*16 - 8y/21 - 1/6 -y = -1/6 -1/6 - (8y+21y)/21 = -2/6 - 29y/21 = -(1/3 + 29у/21)