Bereken
\(+\left(\frac{-10}{7}\right)
+\left(\frac{6}{-5}\right)
+\left(\frac{6}{10}\right)\)
\(+\left(\frac{-10}{7}\right)
+\left(\frac{6}{-5}\right)
+\left(\frac{6}{10}\right)\\= \frac{-10}{7}-
\frac{6}{5}+\frac{6}{10}\\=\frac{-10}{7}-\frac{6}{5}+\frac{3}{5}\\=\frac{-50}{35}-\frac{42}{35}+\frac{21}{35}\\=\frac{-50-42+21}{35}\\=\frac{-71}{35}\)