Solve: $\frac{5}{6}-\frac{4}{5}$

For the subtraction of two unlike fractions, first, change them to like fractions.

LCM of 6, 5 = 30

Now, let us change each of the given fractions into an equivalent fraction having 30 as the denominator.

Therefore,

$\frac{5}{6}=\frac{5\times 5}{6\times 5}=\frac{25}{30}$

$\frac{4}{5}=\frac{4\times 6}{5\times 6}=\frac{24}{30}$

Now,

$\frac{5}{6}-\frac{4}{5}$

$=\frac{25}{30}-\frac{24}{30}$

$=\frac{25-24}{30}$

$=\frac{\mathbf{1}}{\mathbf{30}}$