SOLUTION: Not understanding how to "SIMPLIFY"; 9log9(7) (Nine, Log9 *7) I found an answer on this site; but it said it was already as simplified as it can get. My answer options are; 9, 7

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Not understanding how to "SIMPLIFY"; 9log9(7) (Nine, Log9 *7) I found an answer on this site; but it said it was already as simplified as it can get. My answer options are; 9, 7      Log On


   



Question 976822: Not understanding how to "SIMPLIFY"; 9log9(7)
(Nine, Log9 *7)
I found an answer on this site; but it said it was already as simplified as it can get. My answer options are; 9, 7, 1, 9^7

Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
log base 9 (7) = (9*log 7) / (log 9)
using change of base formula
log 7 / log 9 = 0.88562187458 or approx 1, then
log base 9 (7) = 9 * 1 = 9