Basic Math Examples

80 \div \frac{1}{4} - \frac{3}{5}

$80 \div \frac{1}{4} - \frac{3}{5}$

Step 1

Simplify each term.

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Step 1.1

To divide by a fraction, multiply by its reciprocal.

80 \cdot 4 - \frac{3}{5}

$80 \cdot 4 - \frac{3}{5}$

Step 1.2

Multiply

80

$80$ by

4

$4$ .

320 - \frac{3}{5}

$320 - \frac{3}{5}$

320 - \frac{3}{5}

$320 - \frac{3}{5}$

Step 2

To write

320

$320$ as a fraction with a common denominator, multiply by

\frac{5}{5}

$\frac{5}{5}$ .

320 \cdot \frac{5}{5} - \frac{3}{5}

$320 \cdot \frac{5}{5} - \frac{3}{5}$

Step 3

Combine

320

$320$ and

\frac{5}{5}

$\frac{5}{5}$ .

\frac{320 \cdot 5}{5} - \frac{3}{5}

$\frac{320 \cdot 5}{5} - \frac{3}{5}$

Step 4

Combine the numerators over the common denominator.

\frac{320 \cdot 5 - 3}{5}

$\frac{320 \cdot 5 - 3}{5}$

Step 5

Simplify the numerator.

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Step 5.1

Multiply

320

$320$ by

5

$5$ .

\frac{1600 - 3}{5}

$\frac{1600 - 3}{5}$

Step 5.2

Subtract

3

$3$ from

1600

$1600$ .

\frac{1597}{5}

$\frac{1597}{5}$

\frac{1597}{5}

$\frac{1597}{5}$

Step 6

The result can be shown in multiple forms.

Exact Form:

\frac{1597}{5}

$\frac{1597}{5}$

Decimal Form:

319.4

$319.4$

Mixed Number Form:

319 \frac{2}{5}

$319 \frac{2}{5}$