SOLUTION: if log5 (7)=v and log5(9) =w, express the following in terms of v and w log5 (25/49)

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Question 187516: if log5 (7)=v and log5(9) =w, express the following in terms of v and w
log5 (25/49)
Answer by est_qed(2) About Me  (Show Source):
You can put this solution on YOUR website!
We have
log5 (25/49) = 2 * log5 (5/7) = 2*( log5 (5) - log5(7) ) = 2*( 1 - v ).
Note that it does not depend on w at all.