Basic Math Examples

2

$2$ ,

- 9

$- 9$ ,

- 2

$- 2$ ,

- 6

$- 6$ ,

- 7

$- 7$ ,

- 1

$- 1$ ,

2

$2$

Step 1

The mean of a set of numbers is the sum divided by the number of terms.

\frac{2 - 9 - 2 - 6 - 7 - 1 + 2}{7}

$\frac{2 - 9 - 2 - 6 - 7 - 1 + 2}{7}$

Step 2

Simplify the numerator.

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Step 2.1

Subtract

9

$9$ from

2

$2$ .

\frac{- 7 - 2 - 6 - 7 - 1 + 2}{7}

$\frac{- 7 - 2 - 6 - 7 - 1 + 2}{7}$

Step 2.2

Subtract

2

$2$ from

- 7

$- 7$ .

\frac{- 9 - 6 - 7 - 1 + 2}{7}

$\frac{- 9 - 6 - 7 - 1 + 2}{7}$

Step 2.3

Subtract

6

$6$ from

- 9

$- 9$ .

\frac{- 15 - 7 - 1 + 2}{7}

$\frac{- 15 - 7 - 1 + 2}{7}$

Step 2.4

Subtract

7

$7$ from

- 15

$- 15$ .

\frac{- 22 - 1 + 2}{7}

$\frac{- 22 - 1 + 2}{7}$

Step 2.5

Subtract

1

$1$ from

- 22

$- 22$ .

\frac{- 23 + 2}{7}

$\frac{- 23 + 2}{7}$

Step 2.6

Add

- 23

$- 23$ and

2

$2$ .

\frac{- 21}{7}

$\frac{- 21}{7}$

\frac{- 21}{7}

$\frac{- 21}{7}$

Step 3

Divide

- 21

$- 21$ by

7

$7$ .

- 3

$- 3$