Pre-Algebra Examples

$2 \cdot \frac{21}{4}$

Step 1

Factor $2$ out of $4$ .

$2 \cdot \frac{21}{2 (2)}$

Step 2

Cancel the common factor.

$2 \cdot \frac{21}{2 \cdot 2}$

Step 3

Rewrite the expression.

$\frac{21}{2}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\frac{21}{2}$

Decimal Form:

$10.5$

Mixed Number Form:

$10 \frac{1}{2}$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$