Basic Math Examples

13

$13$ ,

15

$15$ ,

26

$26$ ,

11

$11$ ,

26

$26$ ,

16

$16$ ,

12

$12$

Step 1

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

\frac{13 + 15 + 26 + 11 + 26 + 16 + 12}{7}

$\frac{13 + 15 + 26 + 11 + 26 + 16 + 12}{7}$

Step 2

Simplify the numerator.

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Step 2.1

Add

13

$13$ and

15

$15$ .

\frac{28 + 26 + 11 + 26 + 16 + 12}{7}

$\frac{28 + 26 + 11 + 26 + 16 + 12}{7}$

Step 2.2

Add

28

$28$ and

26

$26$ .

\frac{54 + 11 + 26 + 16 + 12}{7}

$\frac{54 + 11 + 26 + 16 + 12}{7}$

Step 2.3

Add

54

$54$ and

11

$11$ .

\frac{65 + 26 + 16 + 12}{7}

$\frac{65 + 26 + 16 + 12}{7}$

Step 2.4

Add

65

$65$ and

26

$26$ .

\frac{91 + 16 + 12}{7}

$\frac{91 + 16 + 12}{7}$

Step 2.5

Add

91

$91$ and

16

$16$ .

\frac{107 + 12}{7}

$\frac{107 + 12}{7}$

Step 2.6

Add

107

$107$ and

12

$12$ .

\frac{119}{7}

$\frac{119}{7}$

\frac{119}{7}

$\frac{119}{7}$

Step 3

Divide

119

$119$ by

7

$7$ .

17

$17$

13, 15, 26, 11, 26, 16, 12

$13, 15, 26, 11, 26, 16, 12$

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