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x in (-oo:+oo)
(1/3)*6^-4*x = 6 // - 6
(1/3)*6^-4*x-6 = 0
1/3888*x-6 = 0 // + 6
1/3888*x = 6 // : 1/3888
x = 6/1/3888
x = 23328
x = 23328
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