Вычислите 4-4/5-3/4-2/3-1/2-1

Вычислим пример по действиям:

1) 4 - 4/5 = 4 * 5/5 - 4/5 = 20/5 - 4/5 = (20 - 4) / 5 = 16/5;

2) 16/5 - 3/4 = 4 * 16/20 - 5 * 3/20 = 64/20 - 15/20 = (64 - 15) / 20 = 49/20;

3) 49/20 - 2/3 = 3 * 49/60 - 20 * 2/60 = 147/60 - 40/60 = (147 - 40) / 60 = 107/60;

4) 107/60 - 1/2 = 107/60 - 30/60 = (107 - 30) / 60 = 77/60;

5) 77/60 - 1 = 77/60 - 60/60 = 17/60.

Ответ: 17/60.