SOLUTION: what is log4 to base2 with the addition of log7 to base2 then subtract logX to base 2=1

SOLUTION: what is log4 to base2 with the addition of log7 to base2 then subtract logX to base 2=1

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Question 260775: what is log4 to base2 with the addition of log7 to base2 then subtract logX to base 2=1
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
We have

by rules of logs we get

rewriting as powers, we get

so,
x = 14.
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