SOLUTION: If s=1/2d(a+l) what would a equal to if it were the subject of the equation

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Question 1120044: If s=1/2d(a+l) what would a equal to if it were the subject of the equation
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
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s=1/2d(a+1)
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Not clear as written. If you want "a", then just undo what was done to it.


Written as you did, may mean s=1%2F2d%28a%2B1%29.

s%28a%2B1%29=1%2F%282d%29

a%2B1=1%2F%282ds%29

a=1%2F%282ds%29-1