Question 686811

{{{ln(x-6) + ln(x+1)= ln(x-15)}}}

{{{ln((x-6)(x+1))= ln(x-15)}}}

{{{(x-6)(x+1)= x-15}}}

{{{x^2+x-6x-6= x-15}}}

{{{x^2+x-6x-6-x+15=0}}}

{{{x^2-6x+9=0}}}

{{{(x-3)^2=0}}}

{{{x-3=0}}}

{{{x=3}}}