(6 2/11-5 1/77)*(17/35+1 2/5)*(8 1/9-5 7/18) найди значение выражения

6 2/ 11 - 5 / 1 77 = 1 + 2 /11 - 1/ 77 = 1 - 2·7/ 11·7 - 1·1/ 77·1 = 1 + 14/ 77 - 1/ 77 = 1 + 14 - 1/ 77 = 1 13 /77 17 /35 + 1 2 /5 = 1 + 17/ 35 + 2 /5 = 1 + 17·1 /35·1 + 2·7 /5·7 = 1 + 17 /35 + 14/35 = 1 + 17 + 14 /35 = 1 31 /35 8 1/ 9 - 5 7/ 18 = 3 + 1/ 9 - 7 /18 = 3 - 1·2/ 9·2 - 7·1/ 18·1 = 3 + 2/ 18 - 7/ 18 = 3 + 2 - 7 /18 = 3 - 5 /18 = 3·18/ 18 - 5/ 18 = 49/ 18 = 13 + 2·18 /18 = 2 13 /18 1 13/ 77 × 1 31/ 35 = 13 + 1·77/ 77 × 31 + 1·35 /35 = 90 /77 × 66/ 35 = 90·66 /77·35 = 5940 /2695 = 108·55 /49·55 = 108/ 49 108/ 49 × 2 13 /18 = 108/ 49 × 13 + 2·18/ 18 = 108/ 49 × 49 /18 = 108·49/ 49·18 = 5292/ 882 = 6·882 /882 = 6(6 2/11-5 1/77)*(17/35+1 2/5)*(8 1/9-5 7/18) = 6