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(8/3)*x^7 = 11 // - 11
(8/3)*x^7-11 = 0
8/3*x^7 = 11 // : 8/3
x^7 = 33/8
x^7 = 33/8 // ^ 1/7
x = (33/8)^(1/7)
x = (33/8)^(1/7)
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