Asked by Peggy

log base 2 x + log base 2 (x-7)=3 solving steps?
Answered by Reiny
log<sub>2</sub> x + log<sub>2</sub> (x-7) = 3

log<sub>2</sub>( x/(x-7) ) = 3

x/(x-7) = 2^3 = 8
8x - 56 = x
7x = 56
x = 8
Answered by Steve
Hmm. I read it as

x(x-7) = 8

Oddly enough, the answer is the same!
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