Basic Math Examples

\frac{17}{21} - \frac{10}{21}

$\frac{17}{21} - \frac{10}{21}$

Step 1

Combine the numerators over the common denominator.

\frac{17 - 10}{21}

$\frac{17 - 10}{21}$

Step 2

Subtract

10

$10$ from

17

$17$ .

\frac{7}{21}

$\frac{7}{21}$

Step 3

Cancel the common factor of

7

$7$ and

21

$21$ .

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Step 3.1

Factor

7

$7$ out of

7

$7$ .

\frac{7 (1)}{21}

$\frac{7 (1)}{21}$

Step 3.2

Cancel the common factors.

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Step 3.2.1

Factor

7

$7$ out of

21

$21$ .

\frac{7 \cdot 1}{7 \cdot 3}

$\frac{7 \cdot 1}{7 \cdot 3}$

Step 3.2.2

Cancel the common factor.

$\frac{7 \cdot 1}{7 \cdot 3}$

Step 3.2.3

Rewrite the expression.

$\frac{1}{3}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\frac{1}{3}$

Decimal Form:

$0.\overline{3}$