Question

Вычислите:

2 ₋ 3. 1/7*(2₋ 1. 9/11): 8/21

Answer 1

2-3 1/7(2-1 9/11):8/21=2- 3 1/7*2/11:8/21=2-22/7*2/11*21/8=2-23*/4=2-3/2=2- 1 1/2=1/2