Basic Math Examples

r - \frac{1}{3} r

$r - \frac{1}{3} r$

Step 1

Combine

r

$r$ and

\frac{1}{3}

$\frac{1}{3}$ .

r - \frac{r}{3}

$r - \frac{r}{3}$

Step 2

To write

r

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

\frac{3}{3}

$\frac{3}{3}$ .

r \cdot \frac{3}{3} - \frac{r}{3}

$r \cdot \frac{3}{3} - \frac{r}{3}$

Step 3

Simplify terms.

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Step 3.1

Combine

r

$r$ and

\frac{3}{3}

$\frac{3}{3}$ .

\frac{r \cdot 3}{3} - \frac{r}{3}

$\frac{r \cdot 3}{3} - \frac{r}{3}$

Step 3.2

Combine the numerators over the common denominator.

\frac{r \cdot 3 - r}{3}

$\frac{r \cdot 3 - r}{3}$

\frac{r \cdot 3 - r}{3}

$\frac{r \cdot 3 - r}{3}$

Step 4

Simplify the numerator.

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Step 4.1

Move

3

$3$ to the left of

r

$r$ .

\frac{3 \cdot r - r}{3}

$\frac{3 \cdot r - r}{3}$

Step 4.2

Subtract

r

$r$ from

3 r

$3 r$ .

\frac{2 r}{3}

$\frac{2 r}{3}$

\frac{2 r}{3}

$\frac{2 r}{3}$