Basic Math Examples

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

Step 1

To write $20.2$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

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

Step 2

Combine fractions.

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Step 2.1

Combine $20.2$ and $\frac{2}{2}$ .

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

Step 2.2

Combine the numerators over the common denominator.

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

Step 3

Simplify the numerator.

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Step 3.1

Multiply $20.2$ by $2$ .

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

Step 3.2

Subtract $1$ from $40.4$ .

$\frac{39.4}{2}$

Step 4

Divide $39.4$ by $2$ .

$19.7$