Basic Math Examples

$- 86 - 4$ , $421$

Step 1

Subtract $4$ from $- 86$ .

$- 90, 421$

Step 2

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

$\frac{- 90 + 421}{2}$

Step 3

Add $- 90$ and $421$ .

$\frac{331}{2}$

Step 4

Divide.

$165.5$