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9*x^3-(((27*x)/18)*x^2) = 0
3.8/(x^2) = 0.7
1.4*x-(3*(0.7*x-1.3)) = 0.5*(4*x-3)
(((((a^1)/2)*b^1)/3)^1)/2 = 0
x^2 = 81/121
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