SOLUTION: Can you help me solve this? I have a really hard time with Logarithms: log(2x+7) base 4 = log(81) base 3

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Question 391133: Can you help me solve this? I have a really hard time with Logarithms: log(2x+7) base 4 = log(81) base 3
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
log(2x+7) base 4 = log(81) base 3
<==> log(2x+7) base 4 = 4
<==> 4%5E4+=+2x%2B7
==> 2x + 7 = 256,
x = 249/2.