Basic Math Examples

$80$ , $150$ , $55$ , $- 100 - 35$

Step 1

Subtract $35$ from $- 100$ .

$80, 150, 55, - 135$

Step 2

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

$\frac{80 + 150 + 55 - 135}{4}$

Step 3

Simplify the numerator.

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Step 3.1

Add $80$ and $150$ .

$\frac{230 + 55 - 135}{4}$

Step 3.2

Add $230$ and $55$ .

$\frac{285 - 135}{4}$

Step 3.3

Subtract $135$ from $285$ .

$\frac{150}{4}$

Step 4

Cancel the common factor of $150$ and $4$ .

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Step 4.1

Factor $2$ out of $150$ .

$\frac{2 (75)}{4}$

Step 4.2

Cancel the common factors.

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Step 4.2.1

Factor $2$ out of $4$ .

$\frac{2 \cdot 75}{2 \cdot 2}$

Step 4.2.2

Cancel the common factor.

$\frac{2 \cdot 75}{2 \cdot 2}$

Step 4.2.3

Rewrite the expression.

$\frac{75}{2}$

Step 5

Divide.

$37.5$