Question #0dd83

2 Answers
Aug 21, 2015

x = 28/3

Explanation:

-log3(x-9)=0
log3(x-9)=0
Rightarrow 3(x-9) = 1(since log 1 = 0 regardless of base)
x-9 = 1/3
x = 28/3

Aug 21, 2015

If the intended question is: Solve -log_3(x-9)=0, then the solution is x=10

Explanation:

-log_3(x-9)=0 if and only if log_3(x-9)=0

Change to exponential form: (x-9) = 3^0.

So x-9 = 1, and x = 10.