Basic Math Examples

12 \frac{9}{10}

$12 \frac{9}{10}$

Step 1

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

12 + \frac{9}{10}

$12 + \frac{9}{10}$

Step 2

Add

12

$12$ and

\frac{9}{10}

$\frac{9}{10}$ .

Tap for more steps...

Step 2.1

To write

12

$12$ as a fraction with a common denominator, multiply by

\frac{10}{10}

$\frac{10}{10}$ .

12 \cdot \frac{10}{10} + \frac{9}{10}

$12 \cdot \frac{10}{10} + \frac{9}{10}$

Step 2.2

Combine

12

$12$ and

\frac{10}{10}

$\frac{10}{10}$ .

\frac{12 \cdot 10}{10} + \frac{9}{10}

$\frac{12 \cdot 10}{10} + \frac{9}{10}$

Step 2.3

Combine the numerators over the common denominator.

\frac{12 \cdot 10 + 9}{10}

$\frac{12 \cdot 10 + 9}{10}$

Step 2.4

Simplify the numerator.

Tap for more steps...

Step 2.4.1

Multiply

12

$12$ by

10

$10$ .

\frac{120 + 9}{10}

$\frac{120 + 9}{10}$

Step 2.4.2

Add

120

$120$ and

9

$9$ .

\frac{129}{10}

$\frac{129}{10}$

\frac{129}{10}

$\frac{129}{10}$

\frac{129}{10}

$\frac{129}{10}$

Step 3

The result can be shown in multiple forms.

Exact Form:

\frac{129}{10}

$\frac{129}{10}$

Decimal Form:

12.9

$12.9$

Mixed Number Form:

12 \frac{9}{10}

$12 \frac{9}{10}$