Basic Math Examples

\frac{13}{20} - \frac{1}{5}

$\frac{13}{20} - \frac{1}{5}$

Step 1

To write

$- \frac{1}{5}$ as a fraction with a common denominator, multiply by

$\frac{4}{4}$ .

$\frac{13}{20} - \frac{1}{5} \cdot \frac{4}{4}$

Step 2

Write each expression with a common denominator of

$20$ , by multiplying each by an appropriate factor of

$1$ .

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Step 2.1

Multiply

$\frac{1}{5}$ by

$\frac{4}{4}$ .

$\frac{13}{20} - \frac{4}{5 \cdot 4}$

Step 2.2

Multiply

$5$ by

$4$ .

$\frac{13}{20} - \frac{4}{20}$

Step 3

Combine the numerators over the common denominator.

$\frac{13 - 4}{20}$

Step 4

Subtract

$4$ from

$13$ .

$\frac{9}{20}$

Step 5

The result can be shown in multiple forms.

Exact Form:

$\frac{9}{20}$

Decimal Form:

$0.45$