Пошаговое объяснение:
(2 * х/12) - (3/5 * х/12) = 2х/12 - 3х/60 =
10х/60 - 3х/60 = 7х/60
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Пошаговое объяснение:
(2 * х/12) - (3/5 * х/12) = 2х/12 - 3х/60 =
10х/60 - 3х/60 = 7х/60