Question

Вычислите а) -6/7-(5/14-3 10/21) б) 13/15 : 1 1/25 - (- 3/4)*(- 8/9)

Answer 1

А) 1) 5/14-3 10/21=3 5/6
2)-6/7-3 5/6=-4 29/42

б) 1)13/15:11/25=1 32/33
2) -3/4*-8/9=2/3
3) 1 32/33-2/3=1 10/33

Answer 2

Давайте рассчитаем данные математические выражения.

Вычисление а)

Для начала вычислим выражение -6/7-(5/14-3+10/21):

1. Вычислим внутреннюю часть выражения: 5/14-3+10/21 - Сначала выполним вычитание 5/14 - 3: 5/14 - 3 = 5/14 - 42/14 = -37/14 - Затем прибавим 10/21: -37/14 + 10/21 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 10/21 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37/14 + 20/42 = -37