Пошаговое объяснение:
33 1/3 * (2/5 + 5/8 + 11/25) =
= 33 1/3 * (80/200 + 125/200 + 88/200) =
= 33 1/3 * 293/200 =
= 100/3 * 293/200 =
= 293/6 = 48 5/6,
(7 1/3 + 8 5/6) * (7 1/3 - 8 5/6) =
= (22/3 + 53/6) * (22/3 - 53/6) =
= (44/6 + 53/6) * (44/6 - 53/6) =
= 97/6 * (-9/6) = -24 1/4
Пошаговое объяснение:
33 1/3 * (2/5 + 5/8 + 11/25) =
= 33 1/3 * (80/200 + 125/200 + 88/200) =
= 33 1/3 * 293/200 =
= 100/3 * 293/200 =
= 293/6 = 48 5/6,
(7 1/3 + 8 5/6) * (7 1/3 - 8 5/6) =
= (22/3 + 53/6) * (22/3 - 53/6) =
= (44/6 + 53/6) * (44/6 - 53/6) =
= 97/6 * (-9/6) = -24 1/4