Question

30 5/6-(7 1/3+2 1/4):1/4​

Answer 1

Переводим смешанные дроби в неправильные:

$\frac{185}{6} - (\frac{22}{3} + \frac{9}{4}) : \frac{1}{4} = -7,5$

1) $\frac{22}{3} + \frac{9}{4} = \frac{88}{12} + \frac{27}{12} = \frac{115}{12}$

2) $\frac{115}{12} : \frac{1}{4} = \frac{115}{12} * \frac{4}{1} = \frac{115}{3}$

3) $\frac{185}{6} - \frac{115}{3} = \frac{185}{6} - \frac{230}{6} = -\frac{45}{6} = -7,5$