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(1/3)*n = 20
y = (2*x^1)/3
log(1/2)((2*x^2-(4*x)-6)/(4*x-11)) <= -1
(2/3)*x-1 = 4*(x-(1/4))
log(1/2)(2*x^2-(4*x)-((6/4)*x)-11) <= -1
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