Subtraction of Fractions: Finding a Common Denominator by Multiplying the Denominators

Solve the following exercise:

$\frac{1}{2}-\frac{1}{9}=\text{?}$

$\frac{7}{18}$

Solve the following exercise:

$\frac{1}{2}-\frac{2}{7}=\text{?}$

$\frac{3}{14}$

Solve the following exercise:

$\frac{1}{3}-\frac{1}{5}=\text{?}$

$\frac{2}{15}$

Solve the following exercise:

$\frac{2}{4}-\frac{1}{3}=\text{?}$

$\frac{1}{6}$

Solve the following exercise:

$\frac{2}{5}-\frac{2}{6}=\text{?}$

$\frac{1}{15}$

Solve the following exercise:

$\frac{3}{4}-\frac{3}{6}=\text{?}$

$\frac{1}{4}$

Solve the following exercise:

$\frac{3}{4}-\frac{3}{9}=\text{?}$

$\frac{5}{12}$

Solve the following exercise:

$\frac{3}{5}-\frac{1}{2}=\text{?}$

$\frac{1}{10}$

Solve the following exercise:

$\frac{3}{5}-\frac{1}{3}=\text{?}$

$\frac{4}{15}$

Solve the following exercise:

$\frac{3}{5}-\frac{1}{4}=\text{?}$

$\frac{7}{20}$

Solve the following exercise:

$\frac{3}{7}-\frac{1}{3}=\text{?}$

$\frac{2}{21}$

Solve the following exercise:

$\frac{3}{7}-\frac{1}{6}=\text{?}$

$\frac{11}{42}$

Solve the following exercise:

$\frac{3}{8}-\frac{1}{3}=\text{?}$

$\frac{1}{24}$

Solve the following exercise:

$\frac{4}{5}-\frac{1}{3}=\text{?}$

$\frac{7}{15}$

Solve the following exercise:

$\frac{6}{10}-\frac{1}{3}=\text{?}$

$\frac{4}{15}$