Пошаговое объяснение:
(7/4-3/7)×5/6=((49-12)/28)×5/6=
=37/28×5/6=185/168=1 17/168
1 17/168
(7/4−3/7)⋅5/6=(49/28 - 12/28) * 5/6 = 37/28 * 5/6 = 185/168 = 1 17/168
