m, e, a, n, left parenthesis, 12, comma, 16, right parenthesis

mean(12,16)

Evaluate

14

Factor

2\times 7

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12+16=28

To find the mean of the set 12,16 first add the members together.

\frac{28}{2}=14

The mean (average) of the set 12,16 is found by dividing the sum of its members by the number of the members, in this case 2.