Ответ:
4 1/3 - 5 2/7 = 13/3 - 37/7 = 91 / 21 - 111 / 21 = - 20/21
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Ответ:
4 1/3 - 5 2/7 = 13/3 - 37/7 = 91 / 21 - 111 / 21 = - 20/21