Basic Math Examples

$- 12$ , $- 28$ , $- 11$ , $- 13$

Step 1

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

$\frac{- 12 - 28 - 11 - 13}{4}$

Step 2

Simplify the numerator.

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Step 2.1

Subtract $28$ from $- 12$ .

$\frac{- 40 - 11 - 13}{4}$

Step 2.2

Subtract $11$ from $- 40$ .

$\frac{- 51 - 13}{4}$

Step 2.3

Subtract $13$ from $- 51$ .

$\frac{- 64}{4}$

Step 3

Divide $- 64$ by $4$ .

$- 16$