18,5-(4 1/7+3 2/3)÷16/21=

Question

18,5-(4 1/7+3 2/3)÷16/21=

Answer 1

4 1/7 + 3 2/3 = 4 3/21 + 3 14/21 = 7 17/21
7 17/21 : 16/21 = 119/16
18,5 - 119/16 = 18 1/2 - 7 7/16 = 18 8/16 - 7 7/16 = 11 1/16
Ответ: 11 1/16