Pre-Algebra Examples

, , , , , , , , , , ,
Step 1
The mean of a set of numbers is the sum divided by the number of terms.
Step 2
Cancel the common factor of and .
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Step 2.1
Factor out of .
Step 2.2
Factor out of .
Step 2.3
Factor out of .
Step 2.4
Factor out of .
Step 2.5
Factor out of .
Step 2.6
Factor out of .
Step 2.7
Factor out of .
Step 2.8
Factor out of .
Step 2.9
Factor out of .
Step 2.10
Factor out of .
Step 2.11
Factor out of .
Step 2.12
Factor out of .
Step 2.13
Factor out of .
Step 2.14
Factor out of .
Step 2.15
Factor out of .
Step 2.16
Factor out of .
Step 2.17
Factor out of .
Step 2.18
Factor out of .
Step 2.19
Factor out of .
Step 2.20
Factor out of .
Step 2.21
Factor out of .
Step 2.22
Factor out of .
Step 2.23
Factor out of .
Step 2.24
Cancel the common factors.
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Step 2.24.1
Factor out of .
Step 2.24.2
Cancel the common factor.
Step 2.24.3
Rewrite the expression.
Step 3
Simplify the numerator.
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Step 3.1
Add and .
Step 3.2
Add and .
Step 3.3
Add and .
Step 3.4
Add and .
Step 3.5
Add and .
Step 3.6
Add and .
Step 3.7
Add and .
Step 3.8
Add and .
Step 3.9
Add and .
Step 3.10
Add and .
Step 3.11
Add and .
Step 4
Divide by .
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