Question

#549
Пожалуйста!!!
Решите четыре примера
20 баллов

Answer 1

1)((1+1) (2/9 + 1/6))*(2 - 67/42) = (2 + 7/18) * 17/42 = 43/18 * 17/42 = 731/756

2)97/15 * (10 - 200/23) = 97/15 * 30/23 = 192/23

3)55/6 * (11/3 - 13/33) = 55/6 * 36/11 = 5*6 = 30

4)77/12 * 4/11 - 45/4 * 1/9 = 7/3 - 5/4 = 13/12