Question 439771
A=1-(B/C) Solve for C. 
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(B/C) = 1-A
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Invert both sides:
C/B = 1/(1-A)
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C = B/(1-A)
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Using your method:
AC = C - B
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AC-C = -B
C(A-1) = -B
C = B/(1-A)
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Cheers,
Stan H.
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