Solve for L
L=6
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18=2L+L
Multiply both sides of the equation by 2.
18=3L
Combine 2L and L to get 3L.
3L=18
Swap sides so that all variable terms are on the left hand side.
L=\frac{18}{3}
Divide both sides by 3.
L=6
Divide 18 by 3 to get 6.
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