Solve for λ
\lambda =6\pi \approx 18.849555922
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4\pi \times 1+2\pi \times 1=\lambda
Calculate 1 to the power of 2 and get 1.
4\pi +2\pi \times 1=\lambda
Multiply 4 and 1 to get 4.
4\pi +2\pi =\lambda
Multiply 2 and 1 to get 2.
6\pi =\lambda
Combine 4\pi and 2\pi to get 6\pi .
\lambda =6\pi
Swap sides so that all variable terms are on the left hand side.
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