Question

1 1/2 (2b+2,5)=1/3b-0,5

Answer 1

Ответ:

-1. 19/32

Пошаговое объяснение:

1. 1/2 * (2b + 2,5) = 1/3b - 0,5

3/2 * (2b + 25/10) = 1/3b - 5/10

6/2b + 75/20 = 1/3b - 5/10

3b + 15/4 = 1/3b - 1/2

3b - 1/3b = -1/2 - 15/4

2. 3/3b - 1/3b = -2/4 - 15/4

2. 2/3b = -17/4

8/3b = -17/4

b = -17/4 : 8/3

b = -17/4 * 3/8

b = -51/32

b = -1. 19/32