Basic Math Examples

\frac{21}{8} \cdot \frac{4}{15}

$\frac{21}{8} \cdot \frac{4}{15}$

Step 1

Cancel the common factor of

3

$3$ .

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Step 1.1

Factor

3

$3$ out of

21

$21$ .

\frac{3 (7)}{8} \cdot \frac{4}{15}

$\frac{3 (7)}{8} \cdot \frac{4}{15}$

Step 1.2

Factor

3

$3$ out of

15

$15$ .

\frac{3 \cdot 7}{8} \cdot \frac{4}{3 \cdot 5}

$\frac{3 \cdot 7}{8} \cdot \frac{4}{3 \cdot 5}$

Step 1.3

Cancel the common factor.

$\frac{3 \cdot 7}{8} \cdot \frac{4}{3 \cdot 5}$

Step 1.4

Rewrite the expression.

$\frac{7}{8} \cdot \frac{4}{5}$

$\frac{7}{8} \cdot \frac{4}{5}$

Step 2

Cancel the common factor of

$4$ .

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Step 2.1

Factor

$4$ out of

$8$ .

$\frac{7}{4 (2)} \cdot \frac{4}{5}$

Step 2.2

Cancel the common factor.

$\frac{7}{4 \cdot 2} \cdot \frac{4}{5}$

Step 2.3

Rewrite the expression.

$\frac{7}{2} \cdot \frac{1}{5}$

$\frac{7}{2} \cdot \frac{1}{5}$

Step 3

Multiply

$\frac{7}{2}$ by

$\frac{1}{5}$ .

$\frac{7}{2 \cdot 5}$

Step 4

Multiply

$2$ by

$5$ .

$\frac{7}{10}$

Step 5

The result can be shown in multiple forms.

Exact Form:

$\frac{7}{10}$

Decimal Form:

$0.7$

Enter a problem...

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