Question

Вычислите 2 4/13*(3/8-4/15)-11: 5 1/2 Пошагова СРОЧНООО​

Answer 1

2 4/13 · (3/8 - 4/15) - 11 : 5 1/2 = -1 3/4

1) 3/8 - 4/15 = 45/120 - 32/120 = 13/120

2) 2 4/13 · 13/120 = 30/13 · 13/120 = 30/120 = 1/4

3) 11 : 5 1/2 = 11 : 11/2 = 11 · 2/11 = 2

4) 1/4 - 2 = -1 3/4

Ответ: -1 целая 3/4 (-1,75 в десятичных дробях).