Question

Помогите пожайлуста ​

Answer 1

Пошаговое объяснение:

№1

12 + (-20) - (-11) + 18 - (-6) - 10 =

12 - 20 + 11 + 18 + 6 - 10 =

(12 + 18) + (-20 - 10) + 11 + 6 =

20 + (-30) + 16 = 20 - 30 + 16 = 6

№2

1) 3 5/12 - (-1 1/3) = 3 5/12 + 1 1/3 = 3 5/12 + 1 4/12 = 4 9/12 = 4 3/4

2) 4 3/4 + (-3/8) = 4 3/4 - 3/8 = 4 6/8 - 3/8 = 4 3/8

3) 4 3/8 - (-2 1/4) = 4 3/8 + 2 1/4 = 4 3/8 + 2 2/8 = 6 5/8

4) 6 5/8 - 5 5/6 = 6 15/24 - 5 20/24 = 5 39/24 - 5 20/24 = 19/24