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