Basic Math Examples

97

$97$ ,

92

$92$ ,

90

$90$ ,

86

$86$ ,

92

$92$ ,

78

$78$ ,

88

$88$

Step 1

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

\frac{97 + 92 + 90 + 86 + 92 + 78 + 88}{7}

$\frac{97 + 92 + 90 + 86 + 92 + 78 + 88}{7}$

Step 2

Simplify the numerator.

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Step 2.1

Add

97

$97$ and

92

$92$ .

\frac{189 + 90 + 86 + 92 + 78 + 88}{7}

$\frac{189 + 90 + 86 + 92 + 78 + 88}{7}$

Step 2.2

Add

189

$189$ and

90

$90$ .

\frac{279 + 86 + 92 + 78 + 88}{7}

$\frac{279 + 86 + 92 + 78 + 88}{7}$

Step 2.3

Add

279

$279$ and

86

$86$ .

\frac{365 + 92 + 78 + 88}{7}

$\frac{365 + 92 + 78 + 88}{7}$

Step 2.4

Add

365

$365$ and

92

$92$ .

\frac{457 + 78 + 88}{7}

$\frac{457 + 78 + 88}{7}$

Step 2.5

Add

457

$457$ and

78

$78$ .

\frac{535 + 88}{7}

$\frac{535 + 88}{7}$

Step 2.6

Add

535

$535$ and

88

$88$ .

\frac{623}{7}

$\frac{623}{7}$

\frac{623}{7}

$\frac{623}{7}$

Step 3

Divide

623

$623$ by

7

$7$ .

89

$89$