3 целых 1/7 + 5 целых 4/9 + 13 целых 6/7 + 3 целых 5/11 + 10 целых 5/9 + 11 6/11+ 4/7=...

Решите задачу:

$3 \frac{1}{7} +5 \frac{4}{9} +13 \frac{6}{7} +3 \frac{5}{11} + 10 \frac{5}{9} +11 \frac{6}{11} + \frac{4}{7} = \\ \\ = (3 \frac{1}{7} +13 \frac{6}{7} + \frac{4}{7} ) + (5 \frac{4}{9} +10 \frac{5}{9} ) + ( 3 \frac{5}{11} +11 \frac{6}{11} ) = \\ \\ = 17 \frac{4}{7} +16 +15= 48 \frac{4}{7}$