6/5 - 6/10 + 4/10 : 5/8 bằng ....

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#andy

\[\begin{array}{l}
\dfrac{6}{5} - \dfrac{6}{{10}} + \dfrac{4}{{10}}:\dfrac{5}{8}\\
 = \dfrac{6}{5} - \dfrac{3}{5} + \dfrac{2}{5}.\dfrac{8}{5}\\
 = \dfrac{6}{5} - \dfrac{3}{5} + \dfrac{{16}}{{25}}\\
 = \dfrac{3}{5} + \dfrac{{16}}{{25}}\\
 = \dfrac{{31}}{{25}}
\end{array}\]

`6/5 - 6/10 + 4/10 : 5/8`

`= 6/5 - 6/10 + 4/10 . 8/5`

`= 6/5 - 6/10 + 32/50`

`= {60-30+32}/50`

`= 62/50=31/25`

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