1134 В.помогите решить пример

№ 1134 в).7 2/3 + 4 1/6 * (6 2/7 - 3 5/7) = 18 8/211) 6 2/7 - 3 5/7 = 5 9/7 - 3 5/7 = 2 4/72) 4 1/6 * 2 4/7 = 25/6 * 18/7 = (25*3)/(1*7) = 75/7 = 10 5/73) 7 2/3 + 10 5/7 = 7 14/21 + 10 15/21 = 17 29/21 = 18 8/21Пояснения:4 целых 1/6 = (4*6+1)/6 = 25/62 целых 4/7 = (2*7+4)/7 = 18/72/3 = 14/21 - доп.множ.75/7 = 15/21 - доп.множ.3