Question

-6,15+(2 1/2)+(-1 1/3) Помогите ​

Answer 1

-6,15 + (2 1/2) + (-1 1/3) = -4 59/60

1) 0,15 = 15/100 = 3/20

-6,15 + 2 1/2 = -6 3/20 + 2 10/20 = -(6 3/20 - 2 10/20) = -(5 23/20 - 2 10/20) = -3 13/20;

Или так: 1/2 = 5/10 = 0,5

-6,15 + 2 1/2 = -6,15 + 2,5 = -(6,15 - 2,5) = -3,65 = -3 65/100 = -3 13/20;

2) -3 13/20 + (-1 1/3) = -(3 39/60 + 1 20/60) = -4 59/60.

Ответ: (-4 целых 59/60).