Respuesta :

Answer:

Step-by-step explanation:

What is 'symbolically' ???

log(x-4) - log(x+5) = - 1           Use laws of logs to reduce L side

log [(x-4)/(x+5) ]  = -1              antilog both sides

 (x-4)/(x+5) =  1/10                  solve for 'x'

     x-4 = 1/10 x + 1/2

       9/10 x  = 4 1/2

          x = 5

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