Solve for A
A=0
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A=2\pi A\times 11
Add 7 and 4 to get 11.
A=22\pi A
Multiply 2 and 11 to get 22.
A-22\pi A=0
Subtract 22\pi A from both sides.
\left(1-22\pi \right)A=0
Combine all terms containing A.
A=0
Divide 0 by 1-22\pi .
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