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(3^12*x^7)/(2^18) = 6.2 // - 6.2
(3^12*x^7)/(2^18)-6.2 = 0
531441/262144*x^7 = 6.2 // : 531441/262144
x^7 = 3.05827514
x^7 = 3.05827514 // ^ 1/7
x = 3.05827514^(1/7)
x = 3.05827514^(1/7)
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