SOLUTION: if s=1/2d(a+l) then what would a=?

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Question 1120036: if s=1/2d(a+l) then what would a=?
Found 2 solutions by josgarithmetic, Alan3354:
Answer by josgarithmetic(39617) About Me  (Show Source):
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
if s=1/2d(a+l) then what would a=?
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Depends.
Is it s=1%2F2d%28a%2Bl%29 ?
Or s+=+%281%2F2%29d%28a%2Bl%29 ?
Or something else?