5) 17 22-211

Решим пример:

5) $$ 17 \frac{9}{22} - 2 \frac{3}{11} = 17 \frac{9}{22} - 2 \frac{3 \cdot 2}{11 \cdot 2} = 17 \frac{9}{22} - 2 \frac{6}{22} = (17-2) + (\frac{9}{22} - \frac{6}{22}) = 15 + \frac{9-6}{22} = 15 + \frac{3}{22} = 15 \frac{3}{22} $$.

Ответ: $$ 15 \frac{3}{22} $$