Question

Срочно 3 1/4+(-3 2/3+(-4 1/5))

Answer 1

Ответ:

$\frac{13}{4} - ( 3 \times \frac{ 2}{3} + 4 \times \frac{1}{5} )$

$\frac{13}{4} ((3 + 4) + ( \frac{2}{3} + \frac{1}{5} ) = \frac{13}{4} + ( -7 \times \frac{13}{15} ) = \frac{13}{4} - 7 \times \frac{13}{15} = \frac{13}{4} - \frac{118}{15} = - \frac{277}{60} = - 4 \times \frac{37}{60}$