Question

Dau corona si puncte! ​

Answer 1

$( - \frac{1}{2} ) + ( + \frac{7}{3} ) + ( - \frac{4}{15} ) + ( - \frac{2}{5} ) =$

$- \frac{1}{2} + \frac{7}{3} - \frac{4}{15} - \frac{2}{5} =$

$- \frac{15}{30} + \frac{70}{30} - \frac{8}{30} - \frac{12}{30} =$

$\frac{ - 15 + 70 - 8 - 12}{30} =$

$\frac{35}{30 } = \frac{7}{6}$