Basic Math Examples

Find the Mean 15-5 2/9
Step 1
Convert to an improper fraction.
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Step 1.1
A mixed number is an addition of its whole and fractional parts.
Step 1.2
Add and .
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Step 1.2.1
To write as a fraction with a common denominator, multiply by .
Step 1.2.2
Combine and .
Step 1.2.3
Combine the numerators over the common denominator.
Step 1.2.4
Simplify the numerator.
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Step 1.2.4.1
Multiply by .
Step 1.2.4.2
Add and .
Step 2
To write as a fraction with a common denominator, multiply by .
Step 3
Combine and .
Step 4
Combine the numerators over the common denominator.
Step 5
Simplify the numerator.
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Step 5.1
Multiply by .
Step 5.2
Subtract from .
Step 6
The mean of a set of numbers is the sum divided by the number of terms.
Step 7
Divide by .
Step 8
Divide.
Step 9
The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.