Решите по действиям примеры: (6 1/8-1.75):(9-2.2)*(5 6/11-3.5))*1 2/7

1) 6 1/8 - 1,75 = (6 * 8 + 1)/8 - 175/100 = 49/8 - 7/4 = 49/8 - 14/8 = (49 - 14)/8 = 35/8;2) 9 - 2,2 = 9 - 22/10 = 90/10 - 22/10 = (90 - 22)/10 = 68/10;3) 35/8 : 68/10 = 35/8 * 10/68 = (35 * 10)/(8 * 68) = 350/544;4) 5 6/11 - 3,5 = (5 * 11 + 6)/11 - 35/10 = 61/11 - 7/2 = 122/22 - 77/22 = (122 - 77)/22 = 45/22;5) 350/544 * 45/22 = (350 * 45)/(544 * 22) = 15750/11968;6) 1 2/7 = (1 * 7 + 2)/7 = 9/7;7) 15750/11968 * 9/7 = 2250 * 9/11968 = 10125/5984 = 1,69.