11 - 6 13/21 - 3/14 = 11 - (6 26/42 + 9/42) = 11 - 6 35/42 =
= 11 - 6 5/6 = 10 6/6 - 6 5/6 = 4 целых 1/6.
ответ: 4 целых 1/6.
11 - 6 13/21 - 3/14 = 11 - (6 26/42 + 9/42) = 11 - 6 35/42 =
= 11 - 6 5/6 = 10 6/6 - 6 5/6 = 4 целых 1/6.
ответ: 4 целых 1/6.