Answer
The intersection point is (20, 2).
The solution set is $\{20\}.$
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Work Step by Step
The intersection point is (20, 2).
The solution set is $\{20\}.$
Verify by inserting $x=20$:
$LHS= \log(x-15)+\log x=\log(20-15)+\log 20=$
$=\log 5+\log 20=\qquad ...$ Power rule
$=\log(20\cdot 5)=\log 100=\log 10^{2}=2=RHS$
