Пошаговое объяснение:
4 5/14 - (х - 7 3/14)= 2 9/14
4 5/14 - 2 9/14 = 1 10/14
х - 7 3/14 = 1 10/14
х = 5 7/14
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Пошаговое объяснение:
4 5/14 - (х - 7 3/14)= 2 9/14
4 5/14 - 2 9/14 = 1 10/14
х - 7 3/14 = 1 10/14
х = 5 7/14