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Basic Math Examples
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Step 1
Step 1.1
Factor out of .
Step 1.2
Cancel the common factors.
Step 1.2.1
Factor out of .
Step 1.2.2
Cancel the common factor.
Step 1.2.3
Rewrite the expression.
Step 2
Step 2.1
Factor out of .
Step 2.2
Cancel the common factors.
Step 2.2.1
Factor out of .
Step 2.2.2
Cancel the common factor.
Step 2.2.3
Rewrite the expression.
Step 3
Step 3.1
Factor out of .
Step 3.2
Cancel the common factors.
Step 3.2.1
Factor out of .
Step 3.2.2
Cancel the common factor.
Step 3.2.3
Rewrite the expression.
Step 4
Step 4.1
Factor out of .
Step 4.2
Cancel the common factors.
Step 4.2.1
Factor out of .
Step 4.2.2
Cancel the common factor.
Step 4.2.3
Rewrite the expression.
Step 5
Step 5.1
Factor out of .
Step 5.2
Cancel the common factors.
Step 5.2.1
Factor out of .
Step 5.2.2
Cancel the common factor.
Step 5.2.3
Rewrite the expression.
Step 6
Step 6.1
Factor out of .
Step 6.2
Cancel the common factors.
Step 6.2.1
Factor out of .
Step 6.2.2
Cancel the common factor.
Step 6.2.3
Rewrite the expression.
Step 7
Step 7.1
Factor out of .
Step 7.2
Cancel the common factors.
Step 7.2.1
Factor out of .
Step 7.2.2
Cancel the common factor.
Step 7.2.3
Rewrite the expression.
Step 8
Step 8.1
Factor out of .
Step 8.2
Cancel the common factors.
Step 8.2.1
Factor out of .
Step 8.2.2
Cancel the common factor.
Step 8.2.3
Rewrite the expression.
Step 9
The mean of a set of numbers is the sum divided by the number of terms.
Step 10
Step 10.1
Combine the numerators over the common denominator.
Step 10.2
Add and .
Step 10.3
To write as a fraction with a common denominator, multiply by .
Step 10.4
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Step 10.4.1
Multiply by .
Step 10.4.2
Multiply by .
Step 10.5
Combine the numerators over the common denominator.
Step 10.6
Simplify the numerator.
Step 10.6.1
Multiply by .
Step 10.6.2
Add and .
Step 10.7
Combine the numerators over the common denominator.
Step 10.8
Add and .
Step 10.9
To write as a fraction with a common denominator, multiply by .
Step 10.10
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Step 10.10.1
Multiply by .
Step 10.10.2
Multiply by .
Step 10.11
Combine the numerators over the common denominator.
Step 10.12
Simplify the numerator.
Step 10.12.1
Multiply by .
Step 10.12.2
Add and .
Step 10.13
To write as a fraction with a common denominator, multiply by .
Step 10.14
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Step 10.14.1
Multiply by .
Step 10.14.2
Multiply by .
Step 10.15
Combine the numerators over the common denominator.
Step 10.16
Simplify the numerator.
Step 10.16.1
Multiply by .
Step 10.16.2
Add and .
Step 10.17
To write as a fraction with a common denominator, multiply by .
Step 10.18
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Step 10.18.1
Multiply by .
Step 10.18.2
Multiply by .
Step 10.19
Combine the numerators over the common denominator.
Step 10.20
Simplify the numerator.
Step 10.20.1
Multiply by .
Step 10.20.2
Add and .
Step 10.21
Combine the numerators over the common denominator.
Step 10.22
Add and .
Step 10.23
To write as a fraction with a common denominator, multiply by .
Step 10.24
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Step 10.24.1
Multiply by .
Step 10.24.2
Multiply by .
Step 10.25
Combine the numerators over the common denominator.
Step 10.26
Add and .
Step 10.27
Combine the numerators over the common denominator.
Step 10.28
Add and .
Step 10.29
To write as a fraction with a common denominator, multiply by .
Step 10.30
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Step 10.30.1
Multiply by .
Step 10.30.2
Multiply by .
Step 10.31
Combine the numerators over the common denominator.
Step 10.32
Simplify the numerator.
Step 10.32.1
Multiply by .
Step 10.32.2
Add and .
Step 10.33
To write as a fraction with a common denominator, multiply by .
Step 10.34
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Step 10.34.1
Multiply by .
Step 10.34.2
Multiply by .
Step 10.35
Combine the numerators over the common denominator.
Step 10.36
Add and .
Step 10.37
Divide by .
Step 11
Divide.
Step 12
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.