Пошаговое объяснение:
№2
(х - 2 7/8) + 3 3/6 = 4 2/3
х - 2 7/8 = 4 2/3 - 3 3/6
х - 2 7/8 = 4 4/6 - 3 3/6
х - 2 7/8 = 1 1/6
х = 1 1/6 + 2 7/8
х = 1 4/24 + 2 21/24
х = 3 25/24
х = 4 1/24
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Пошаговое объяснение:
№2
(х - 2 7/8) + 3 3/6 = 4 2/3
х - 2 7/8 = 4 2/3 - 3 3/6
х - 2 7/8 = 4 4/6 - 3 3/6
х - 2 7/8 = 1 1/6
х = 1 1/6 + 2 7/8
х = 1 4/24 + 2 21/24
х = 3 25/24
х = 4 1/24