Question

Va rog, ajuta-ti ma, foarte urgent
(-24 Supra 35)+ [(-1 3 supra 14)+(+2 2 supra 15)]

Answer 1

$\frac{-24}{35}+[( -1\frac{3}{14})+( 2\frac{2}{15})]=$

$=\frac{-24}{35}+\left[\left(-\frac{17}{14}\right)+\left(\frac{32}{15}\right)\right]$

$=\frac{-24}{35}-\frac{17}{14}+\frac{32}{15}$

$=-\frac{24}{35}-\frac{17}{14}+\frac{32}{15}:\quad 210$

$=-\frac{24\cdot \:6}{210}-\frac{17\cdot \:15}{210}+\frac{32\cdot \:14}{210}$

$=\frac{-6\cdot \:24-+14\cdot \:32}{210}$

$=\frac{49}{210}$

$=\frac{7}{30}$

$1 \frac{3}{14}= \frac{1\cdot \:14+3}{14}= \frac{17}{14}$
$2 \frac{2}{15}= \frac{2\cdot \:15+2}{15}= \frac{32}{15}$