Question

-5/6 . 7/13 + 19/13 : 6/-5 + 2/5 ét o ét giúp m với ạ:((

Answer 1

\(-\dfrac{5}{6}\cdot\dfrac{7}{13}+\dfrac{19}{13}:\dfrac{6}{-5}+\dfrac{2}{5}\)
\(=-\dfrac{5}{6}\cdot\dfrac{7}{13}+\dfrac{19}{13}\cdot-\dfrac{5}{6}+\dfrac{2}{5}\)
\(=-\dfrac{5}{6}\left(\dfrac{7}{13}+\dfrac{9}{13}\right)+\dfrac{2}{5}\)
\(=-\dfrac{5}{6}\cdot2+\dfrac{2}{5}\)
\(=-\dfrac{5}{3}+\dfrac{2}{5}\)
\(=-\dfrac{25}{15}+\dfrac{6}{15}\)
\(=-\dfrac{19}{15}\)
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