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High school mathematics logarithmic calculation problems
Set log27=a and verify log? 16=4(3-a)/(3+a)。

Proof: Right = 4 (3-log27)/(3+log27) = 4 (log12? -log27)/(log 12? +log27)

=[4 log( 1728/27)]/[log( 12? ×27)]=(4log64)/(log36? )=(4log2? )/(log6? )

= 4 log 2)/(log 6)=(log 16)/(log 6)= log? 16= left.