(0,39-1,326:1,3)*2 1/12+1/4 решите плиз

Решите задачу:

$(0.39 - 1.326 \div 1.3) \times 2 \frac{1}{12} + \frac{1}{4} = (0.39 - 1.02) \times \frac{25}{12} + \frac{1}{4} = - 0.63 \times \frac{25}{12} + \frac{1}{4} = - \frac{63}{100} \times \frac{25}{12} + \frac{1}{4} = - \frac{21 \times 1}{4 \times 4} = - \frac{21}{16} + \frac{1}{4} = - \frac{21}{16} + \frac{4}{16} = - \frac{17}{16} = - 1 \frac{1}{16}$