Пошаговое объяснение:
(3d - 2)/5 = 7/2
2 * (3d - 2) = 7 * 5
6d - 4 = 35
6d = 35 + 4
6d = 39
d = 39 : 6
d = 6,5
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Пошаговое объяснение:
(3d - 2)/5 = 7/2
2 * (3d - 2) = 7 * 5
6d - 4 = 35
6d = 35 + 4
6d = 39
d = 39 : 6
d = 6,5