You can
put this solution on YOUR website!log5x/logx= 3
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log(5x) = 3log(x)
log(5x) = log(x^3)
x^3 = 5x
x^3 - 5x = 0
x(x^2-5) = 0
x = 0
0 is not allowed
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x = +sqrt(5)
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-sqrt(5) is not allowed due to the log function