(8 1/6 - 5/18) :14/27 - (10 7/8 : 3/4 * 2/3 + 5 3/7 : 6 1/3) * 3/17 помогите пожалуйста решить по действиям

(8 1/6 - 5/18) :14/27 - (10 7/8 : 3/4 * 2/3 + 5 3/7 : 6 1/3) * 3/17 = 13 5/14. 1) 8 1/6 - 5/18 = 8 3/18 - 5/18 = 7 21/18 - 5/18 = 7 16/18 = 7 8/9; 2) 7 8/9 : 14/27 = 71/9 : 14/27 = 71/9 * 27/14 = (71 * 27) /(9 * 14) = (71 * 3) /(1 * 14) = 213/14 = 15 3/14; 3) 10 7/8 : 3/4 * 2/3 = 87/8 * 4/3 * 2/3 = (87 * 4 * 2)/(8 * 3 * 3) = (29 * 1 * 1)/(1 * 3 * 1) = 29/3 = 9 2/3; 4) 5 3/7 : 6 1/3 = 38/7 : 19/3 = 38/7 * 3/19 = (38 * 3)/(7 * 19) = (2 * 3)/(7 * 1) = 6/7; 5) 9 2/3 + 6/7 = 9 14/21 + 18/21 = 9 32/21 = 10 11/21; 6) 10 11/21 * 3/17 = 221/21 * 3/17 = (221 * 3)/(21 * 17) = (13 * 1)/(7 * 1) = 13/7 = 1 6/7; 7) 15 3/14 - 1 6/7 = 15 3/14 - 1 12/14 = 14 17/14 - 1 12/14 = 13 5/14.