5
(1/4 + 1/6) 10 = (5/6 - 1/4) / 7(5/12) 10 = (5/6 - 3/12) / 7(50/12) = (24/12) / 7(50/12) = (21/12)50 = 21
Уравнение неверно.
5
(1/4 + 1/6) 10 = (5/6 - 1/4) / 7
(5/12) 10 = (5/6 - 3/12) / 7
(50/12) = (24/12) / 7
(50/12) = (21/12)
50 = 21
Уравнение неверно.