$\frac{5}{6}$ - $25$

= $\frac{5}{6}$ - $\frac{25}{1}$

= $\frac{5}{6}$ - $\frac{25.6}{1.6}$

= $\frac{5}{6}$ - $\frac{150}{6}$

= $\frac{5 - 150}{6}$ 

= $\frac{-145}{6}$ 

$saohoakhovay$

$hoidap247$