Basic Math Examples

\frac{1}{6} - \frac{8}{9}

$\frac{1}{6} - \frac{8}{9}$

Step 1

To write

\frac{1}{6}

$\frac{1}{6}$ as a fraction with a common denominator, multiply by

\frac{3}{3}

$\frac{3}{3}$ .

\frac{1}{6} \cdot \frac{3}{3} - \frac{8}{9}

$\frac{1}{6} \cdot \frac{3}{3} - \frac{8}{9}$

Step 2

To write

- \frac{8}{9}

$- \frac{8}{9}$ as a fraction with a common denominator, multiply by

\frac{2}{2}

$\frac{2}{2}$ .

\frac{1}{6} \cdot \frac{3}{3} - \frac{8}{9} \cdot \frac{2}{2}

$\frac{1}{6} \cdot \frac{3}{3} - \frac{8}{9} \cdot \frac{2}{2}$

Step 3

Write each expression with a common denominator of

18

$18$ , by multiplying each by an appropriate factor of

1

$1$ .

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Step 3.1

Multiply

\frac{1}{6}

$\frac{1}{6}$ by

\frac{3}{3}

$\frac{3}{3}$ .

\frac{3}{6 \cdot 3} - \frac{8}{9} \cdot \frac{2}{2}

$\frac{3}{6 \cdot 3} - \frac{8}{9} \cdot \frac{2}{2}$

Step 3.2

Multiply

6

$6$ by

3

$3$ .

\frac{3}{18} - \frac{8}{9} \cdot \frac{2}{2}

$\frac{3}{18} - \frac{8}{9} \cdot \frac{2}{2}$

Step 3.3

Multiply

\frac{8}{9}

$\frac{8}{9}$ by

\frac{2}{2}

$\frac{2}{2}$ .

\frac{3}{18} - \frac{8 \cdot 2}{9 \cdot 2}

$\frac{3}{18} - \frac{8 \cdot 2}{9 \cdot 2}$

Step 3.4

Multiply

9

$9$ by

2

$2$ .

\frac{3}{18} - \frac{8 \cdot 2}{18}

$\frac{3}{18} - \frac{8 \cdot 2}{18}$

\frac{3}{18} - \frac{8 \cdot 2}{18}

$\frac{3}{18} - \frac{8 \cdot 2}{18}$

Step 4

Combine the numerators over the common denominator.

\frac{3 - 8 \cdot 2}{18}

$\frac{3 - 8 \cdot 2}{18}$

Step 5

Simplify the numerator.

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Step 5.1

Multiply

- 8

$- 8$ by

2

$2$ .

\frac{3 - 16}{18}

$\frac{3 - 16}{18}$

Step 5.2

Subtract

16

$16$ from

3

$3$ .

\frac{- 13}{18}

$\frac{- 13}{18}$

\frac{- 13}{18}

$\frac{- 13}{18}$

Step 6

Move the negative in front of the fraction.

- \frac{13}{18}

$- \frac{13}{18}$

Step 7

The result can be shown in multiple forms.

Exact Form:

- \frac{13}{18}

$- \frac{13}{18}$

Decimal Form:

- 0.7 ¯ 2

$- 0.7\overline{2}$