Solve for L
L = -\frac{47}{20} = -2\frac{7}{20} = -2.35
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1-20L-48=0
Calculate 1 to the power of 2 and get 1.
-47-20L=0
Subtract 48 from 1 to get -47.
-20L=47
Add 47 to both sides. Anything plus zero gives itself.
L=\frac{47}{-20}
Divide both sides by -20.
L=-\frac{47}{20}
Fraction \frac{47}{-20} can be rewritten as -\frac{47}{20} by extracting the negative sign.
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