Pre-Algebra Examples

Step 1
The area of a trapezoid is equal to times the height times the sum of the bases .
Step 2
Substitute the values of the height and bases ( and ) into the formula for the area of a trapezoid.
Step 3
Cancel the common factor of .
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Step 3.1
Factor out of .
Step 3.2
Cancel the common factor.
Step 3.3
Rewrite the expression.
Step 4
Simplify the expression.
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Step 4.1
Add and .
Step 4.2
Multiply by .
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