Basic Math Examples

15

$15$ ,

22

$22$ ,

19

$19$ ,

20

$20$ ,

29

$29$ ,

18

$18$ ,

25

$25$ ,

19

$19$ ,

31

$31$

Step 1

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

\frac{15 + 22 + 19 + 20 + 29 + 18 + 25 + 19 + 31}{9}

$\frac{15 + 22 + 19 + 20 + 29 + 18 + 25 + 19 + 31}{9}$

Step 2

Simplify the numerator.

Tap for more steps...

Step 2.1

Add

15

$15$ and

22

$22$ .

\frac{37 + 19 + 20 + 29 + 18 + 25 + 19 + 31}{9}

$\frac{37 + 19 + 20 + 29 + 18 + 25 + 19 + 31}{9}$

Step 2.2

Add

37

$37$ and

19

$19$ .

\frac{56 + 20 + 29 + 18 + 25 + 19 + 31}{9}

$\frac{56 + 20 + 29 + 18 + 25 + 19 + 31}{9}$

Step 2.3

Add

56

$56$ and

20

$20$ .

\frac{76 + 29 + 18 + 25 + 19 + 31}{9}

$\frac{76 + 29 + 18 + 25 + 19 + 31}{9}$

Step 2.4

Add

76

$76$ and

29

$29$ .

\frac{105 + 18 + 25 + 19 + 31}{9}

$\frac{105 + 18 + 25 + 19 + 31}{9}$

Step 2.5

Add

105

$105$ and

18

$18$ .

\frac{123 + 25 + 19 + 31}{9}

$\frac{123 + 25 + 19 + 31}{9}$

Step 2.6

Add

123

$123$ and

25

$25$ .

\frac{148 + 19 + 31}{9}

$\frac{148 + 19 + 31}{9}$

Step 2.7

Add

148

$148$ and

19

$19$ .

\frac{167 + 31}{9}

$\frac{167 + 31}{9}$

Step 2.8

Add

167

$167$ and

31

$31$ .

\frac{198}{9}

$\frac{198}{9}$

\frac{198}{9}

$\frac{198}{9}$

Step 3

Divide

198

$198$ by

9

$9$ .

22

$22$