Solve: $\frac{7}{8}-\frac{5}{12}$

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

LCM of 8, 12 = 24

Now, let us change each of the given fractions into an equivalent fraction having 24 as the denominator.

Therefore,

$\frac{7}{8}=\frac{7\times 3}{8\times 3}=\frac{21}{24}$

$\frac{5}{12}=\frac{5\times 2}{12\times 2}=\frac{10}{24}$

Now,

$\frac{7}{8}-\frac{5}{12}$

$=\frac{21}{24}-\frac{10}{24}$

$=\frac{21-10}{24}$

$=\frac{\mathbf{11}}{\mathbf{24}}$