$\frac{-2}{5}$ + $\frac{5}{6}$`x` = $\frac{-4}{15}$
$\frac{5}{6}$`x` = $\frac{-4}{15}$ - $\frac{-2}{5}$
$\frac{5}{6}$`x` = $\frac{-4}{15}$ + $\frac{2}{5}$
$\frac{5}{6}$`x` = $\frac{2}{15}$
`x` = $\frac{2}{15}$ : $\frac{5}{6}$
`x` = $\frac{2}{15}$ x $\frac{6}{5}$
`x` = $\frac{12}{75}$
`x` = $\frac{4}{25}$
`Lunangoctrang1`