Basic Math Examples

$4 \frac{20}{21}$

Step 1

A mixed number is an addition of its whole and fractional parts.

$4 + \frac{20}{21}$

Step 2

Add

$4$ and

$\frac{20}{21}$ .

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Step 2.1

To write

$4$ as a fraction with a common denominator, multiply by

$\frac{21}{21}$ .

$4 \cdot \frac{21}{21} + \frac{20}{21}$

Step 2.2

Combine

$4$ and

$\frac{21}{21}$ .

$\frac{4 \cdot 21}{21} + \frac{20}{21}$

Step 2.3

Combine the numerators over the common denominator.

$\frac{4 \cdot 21 + 20}{21}$

Step 2.4

Simplify the numerator.

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Step 2.4.1

Multiply

$4$ by

$21$ .

$\frac{84 + 20}{21}$

Step 2.4.2

Add

$84$ and

$20$ .

$\frac{104}{21}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\frac{104}{21}$

Decimal Form:

$4.\overline{952380}$

Mixed Number Form:

$4 \frac{20}{21}$