SOLUTION: literal equation of a trapezoid A=1/2(a+b)h solve for b pls????

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Question 641213: literal equation of a trapezoid A=1/2(a+b)h solve for b pls????
Answer by tag22man(4) About Me  (Show Source):
You can put this solution on YOUR website!
To solve equation for b
+A=1%2F2%28a%2Bb%29h
First multiply both sides by 1/2
2A=%28a%2Bb%29h
Then divide by h
2A%2Fh=a%2Bb
Lastly, subtract a
2A%2Fh-a=b
To give the function for b.
Voila!