Ответ:
55/42
19/14 + 8/24 = 511/294
511/294 - 3/7 = 385/294 сокращаем 55/42
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Ответ:
55/42
19/14 + 8/24 = 511/294
511/294 - 3/7 = 385/294 сокращаем 55/42