Isolating L, it is found that the solution for L is given by:
[tex]L = 2(S - B)[/tex]
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The equation is:
[tex]S = B + \frac{1}{2}L[/tex]
Leaving everything with L on one side, everything without on the other.
[tex]\frac{L}{2} = S - B[/tex]
[tex]L = 2(S - B)[/tex]
Which is the solution for L.
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