3) 1 + 10 6 ; 15

3) $$1 \frac{1}{10} + \frac{6}{15}$$

$$1 \frac{1}{10} + \frac{6}{15} = 1 \frac{1}{10} + \frac{2}{5} = 1 \frac{1}{10} + \frac{2 \cdot 2}{5 \cdot 2} = 1 \frac{1}{10} + \frac{4}{10} = 1 \frac{5}{10} = 1 \frac{1}{2}$$

Ответ: $$1 \frac{1}{2}$$