1 9)-3-(-11).

9) $$ -3\frac{1}{6} - (-1\frac{1}{4}) $$

$$ -3\frac{1}{6} - (-1\frac{1}{4}) = -3\frac{1}{6} + 1\frac{1}{4} = -3 - \frac{1}{6} + 1 + \frac{1}{4} = -2 - \frac{1}{6} + \frac{1}{4} = -2 - \frac{1 \cdot 2}{6 \cdot 2} + \frac{1 \cdot 3}{4 \cdot 3} = -2 - \frac{2}{12} + \frac{3}{12} = -2 + \frac{-2+3}{12} = -2 + \frac{1}{12} = -1 - 1 + \frac{1}{12} = -1 - \frac{12}{12} + \frac{1}{12} = -1 - \frac{12-1}{12} = -1 \frac{11}{12} $$.

Ответ: $$ -1\frac{11}{12} $$