Tìm x biết \(\dfrac{x}{5}=\dfrac{5}{6}+\dfrac{-19}...

C

- Hướng dẫn giải

 \(\dfrac{x}{5}=\dfrac{5}{6}+\dfrac{-19}{30}\)

\(=\dfrac{5.5}{6.5} + \dfrac{{ - 19}}{{30}} = \dfrac{{25+(-19)}}{{30}}\)

\(= \dfrac{6}{{30}} = \dfrac{1}{5}\)

Vậy x = 1