SOLUTION: log 3x = log 5 + log (x - 2) I think I am getting this. But when I follow the equation, my answer is just off, not sure where I'm going wrong now. Can some one please help, sh

Algebra.Com
Question 828281: log 3x = log 5 + log (x - 2)
I think I am getting this. But when I follow the equation, my answer is just off, not sure where I'm going wrong now. Can some one please help, show me the error of my ways.
thanks

Found 2 solutions by Edwin McCravy, kmadison:
Answer by Edwin McCravy(20063)   (Show Source): You can put this solution on YOUR website!
log(3x) = log(5) + log(x-2)

Use this rule on the right:

Taking out log of an addition changes the
addition to multiplication:

log(3x) = log[5(x-2)]

log(3x) = log[5x-10]

Use the rule:   if log(A)=log(B) then A=B

     3x = 5x-10
    
    -2x = -10

      x = 5

Edwin


Answer by kmadison(20)   (Show Source): You can put this solution on YOUR website!
Solve for x over the real numbers:

Move everything to the left hand side.
Subtract log(5)+log(x-2) from both sides:

Combine logarithms.

Eliminate the logarithm from the left hand side.
Cancel logarithms by taking exp of both sides:

Multiply both sides by a polynomial to clear fractions.
Multiply both sides by 5 (x-2):

Write the linear polynomial on the right hand side in standard form.
Expand out terms of the right hand side:

Isolate x to the left hand side.
Subtract 5 x from both sides:

Solve for x.
Divide both sides by -2:
Answer:

RELATED QUESTIONS

log(x-3)+log(x) = 2 + log(x+2) *The base for the logarithms is 2. I just need help... (answered by stanbon,Edwin McCravy)
Please help! Evaluate the following, Log(0.5)27.1 answer is loosely -4.7602 when I... (answered by Alan3354)
2 log base 5 x + 3 log base 5 (x-2). My instructor said the answer is log 32.5/log... (answered by Alan3354)
log (-x) + log (3) = log (2x-15) I got an answer of 5 but I am not sure if that... (answered by Edwin McCravy)
Expand {{{log(ab/sqrt(c))}}} using the log rules my work:... (answered by jsmallt9)
Solve for x: log(base 5)3x + log(base 5)(x-3) = 1 I see they both have a common base... (answered by Earlsdon)
Hi. I'm am required to find x in this equation: {{{log (5, (5-4x))}}} = {{{log (sqrt(5),... (answered by Earlsdon)
Solve for x log(base5)x+log(base5)(x+1)=7 I tried solving this equation but couldn't... (answered by josgarithmetic,Boreal)
log base 3 (10x^2-x-2)=2+2*log base 3X solve for x I tried to change the 2*log base 3x... (answered by stanbon)