SOLUTION: I need help solving this logarithmic equation log(x-14)-log5=log(x-12)-logx
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Question 129918
:
I need help solving this logarithmic equation
log(x-14)-log5=log(x-12)-logx
Answer by
scott8148(6628)
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by rules of logs __
"cross" multiplying __ (x-14)x=(x-12)5 __ x^2-14x=5x-60
subtracting 5x-60 __ x^2-19x+60=0
factoring __ (x-15)(x-4)=0
REMEMBER, logs are not defined for values <=0