Basic Math Examples

20.2 - \frac{1}{2}

$20.2 - \frac{1}{2}$

Step 1

To write

20.2

$20.2$ as a fraction with a common denominator, multiply by

\frac{2}{2}

$\frac{2}{2}$ .

20.2 \cdot \frac{2}{2} - \frac{1}{2}

$20.2 \cdot \frac{2}{2} - \frac{1}{2}$

Step 2

Combine fractions.

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Step 2.1

Combine

20.2

$20.2$ and

\frac{2}{2}

$\frac{2}{2}$ .

\frac{20.2 \cdot 2}{2} - \frac{1}{2}

$\frac{20.2 \cdot 2}{2} - \frac{1}{2}$

Step 2.2

Combine the numerators over the common denominator.

\frac{20.2 \cdot 2 - 1}{2}

$\frac{20.2 \cdot 2 - 1}{2}$

\frac{20.2 \cdot 2 - 1}{2}

$\frac{20.2 \cdot 2 - 1}{2}$

Step 3

Simplify the numerator.

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Step 3.1

Multiply

20.2

$20.2$ by

2

$2$ .

\frac{40.4 - 1}{2}

$\frac{40.4 - 1}{2}$

Step 3.2

Subtract

1

$1$ from

40.4

$40.4$ .

\frac{39.4}{2}

$\frac{39.4}{2}$

\frac{39.4}{2}

$\frac{39.4}{2}$

Step 4

Divide

39.4

$39.4$ by

2

$2$ .

19.7

$19.7$