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(ln(8)-((5*x)/3)-3)/2 = 0
((-5/3)*x+ln(8)-3)/2 = 0
(ln(8)-5/3*x-3)/2 = 0
ln(8)-5/3*x-3 = 0 // - ln(8)-3
-5/3*x = -(ln(8)-3) // : -5/3
x = (-(ln(8)-3))/(-5/3)
x = -3/5*(3-ln(8))
x = -3/5*(3-ln(8))
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