Question

Помогите пожалуйста решить ​

Answer 1

Пошаговое объяснение:

№1

1) -2. 1/2 + 3. 2/3 = -2. 3/6 + 3. 4/6 = 1. 1/6

2) 1. 1/6 * 2. 1/7 = 7/6 * 15/7 = 1/2 * 5/1 = 5/2 = 2. 1/2

3) 2. 1/2 - 1. 1/2 = 1

№2

1) 9/10 - 11/12 = 54/60 - 55/60 = -1/60

2) 1. 1/3 - 3 = 1. 1/3 - 2. 3/3 = -1. 2/3

3) 12 * (-1/60 = -12/60 = -1/5

4) -1/5 * (-1. 2/3) = -1/5 * (-5/3) = -1/1 * (-1/3) = 1/3