krazymann11
krazymann11 krazymann11
  • 10-03-2020
  • Mathematics
contestada

log 15 (2x − 2) = log 15 (x+9)

Respuesta :

frika
frika frika
  • 18-03-2020

Answer:

[tex]x=11[/tex]

Step-by-step explanation:

Given the equation

[tex]\log_{15}(2x-2)=\log_{15}(x+9)[/tex]

Note that

[tex]2x-2>0\\ \\2x>2\\ \\x>1[/tex]

and

[tex]x+9>0\\ \\x>-9[/tex]

Combined, [tex]x>1[/tex]

Solve the equation:

[tex]2x-2= x+9\\ \\2x-x=9+2\\ \\x=11[/tex]

Since [tex]11>1,[/tex] this is the solution to the equation.

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