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(1/2)*ln(12)-ln(4)+2 = x // - x
(1/2)*ln(12)-x-ln(4)+2 = 0
1/2*ln(12)-x-ln(4)+2 = 0 // - 1/2*ln(12)-ln(4)+2
-x = -(1/2*ln(12)-ln(4)+2) // * -1
x = 1/2*ln(12)-ln(4)+2
x = 1/2*ln(12)-ln(4)+2
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