Найдите значения выражения (20 1 /5 -b)- 6 1/3 при b=11 2/15
(20 1/5 - b) - 6 1/3 = (101/5 - b) - 19/3 = 101/5 - 167/15 - 19/3 = 303/15 - 167/15 - 95/15 = 136/15 - 95/15 = 41/15 = 2 11/15