SOLUTION: Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic express

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Question 688976: Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.
1/2(log7 (r - 7) - log7 r)

I just don't understand where to begin to even get my option answers in the book.
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.
1/2(log7 (r - 7) - log7 r)
log7[(r-7)^(1/2)/r]