SOLUTION: log(base 16) x + log(base 4 x + log(base 2) x = 7 the answer is 16, but i want to know how they got it because i keep getting 16^1/3

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Question 516126: log(base 16) x + log(base 4 x + log(base 2) x = 7
the answer is 16, but i want to know how they got it because i keep getting 16^1/3

Answer by scott8148(6628)   (Show Source): You can put this solution on YOUR website!
16 = 2^4 ___ log2(x) = 4[log16(x)]

16 = 4^2 ___ log4(x) = 2[log16(x)]

log16(x) + 2[log16(x)] + 4[log16(x)] = 7

7[log16(x)] = 7

log16(x) = 1

x = 16

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