Basic Math Examples

$2$ , $4$ , $8$ , $16$

Step 1

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

$\frac{2 + 4 + 8 + 16}{4}$

Step 2

Cancel the common factor of $2 + 4 + 8 + 16$ and $4$ .

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Step 2.1

Factor $2$ out of $2$ .

$\frac{2 (1) + 4 + 8 + 16}{4}$

Step 2.2

Factor $2$ out of $4$ .

$\frac{2 \cdot 1 + 2 \cdot 2 + 8 + 16}{4}$

Step 2.3

Factor $2$ out of $2 \cdot 1 + 2 \cdot 2$ .

$\frac{2 \cdot (1 + 2) + 8 + 16}{4}$

Step 2.4

Factor $2$ out of $8$ .

$\frac{2 \cdot (1 + 2) + 2 (4) + 16}{4}$

Step 2.5

Factor $2$ out of $2 \cdot (1 + 2) + 2 (4)$ .

$\frac{2 \cdot (1 + 2 + 4) + 16}{4}$

Step 2.6

Factor $2$ out of $16$ .

$\frac{2 \cdot (1 + 2 + 4) + 2 (8)}{4}$

Step 2.7

Factor $2$ out of $2 \cdot (1 + 2 + 4) + 2 (8)$ .

$\frac{2 \cdot (1 + 2 + 4 + 8)}{4}$

Step 2.8

Cancel the common factors.

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Step 2.8.1

Factor $2$ out of $4$ .

$\frac{2 \cdot (1 + 2 + 4 + 8)}{2 (2)}$

Step 2.8.2

Cancel the common factor.

$\frac{2 \cdot (1 + 2 + 4 + 8)}{2 \cdot 2}$

Step 2.8.3

Rewrite the expression.

$\frac{1 + 2 + 4 + 8}{2}$

Step 3

Simplify the numerator.

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Step 3.1

Add $1$ and $2$ .

$\frac{3 + 4 + 8}{2}$

Step 3.2

Add $3$ and $4$ .

$\frac{7 + 8}{2}$

Step 3.3

Add $7$ and $8$ .

$\frac{15}{2}$

Step 4

Divide.

$7.5$