Change the following mixed fractions to improper fractions :

$2\frac{1}{5}$

Change the following mixed fractions to improper fractions :

$3\frac{1}{4}$

Change the following mixed fractions to improper fractions :

$7\frac{1}{8}$

Change the following mixed fractions to improper fractions :

Change the following improper fractions to mixed fractions :

$\frac{100}{17}$

Change the following improper fractions to mixed fractions :

$\frac{81}{11}$

Change the following improper fractions to mixed fractions :

$-\frac{209}{7}$

Change the following improper fractions to mixed fractions :

$-\frac{113}{15}$

Change the following groups of fractions to like fractions :

$\frac{1}{3},\frac{2}{5},\frac{3}{4},\frac{1}{6}$