91Ó°ÊÓ

In the following exercise, add or subtract:$\frac{x}{5}-\frac{1}{4}$

In the following exercise, simplify:$\left(a\right)\frac{2}{3}+\frac{1}{6}\left(b\right)\frac{2}{3}÷\frac{1}{6}$

In the following exercise, simplify:$\left(a\right)-\frac{2}{5}-\frac{1}{8}\left(b\right)-\frac{2}{5}.\frac{1}{8}$

In the following exercise, simplify:$\left(a\right)\frac{5n}{6}÷\frac{8}{15}\left(b\right)\frac{5n}{6}-\frac{8}{15}$

In the following exercise, simplify:$\left(a\right)\frac{3a}{8}÷\frac{7}{12}\left(b\right)\frac{3a}{8}-\frac{7}{12}$

In the following exercise, simplify:$-\frac{3}{8}÷(-\frac{3}{10})$

In the following exercise, simplify:$-\frac{5}{12}÷(-\frac{5}{9})$

In the following exercise, simplify:$-\frac{3}{8}+\frac{5}{12}$

In the following exercise, simplify:$-\frac{1}{8}+\frac{7}{12}$

In the following exercise, simplify:$\frac{5}{6}-\frac{1}{9}$