SOLUTION: Having problems with this problem 9log9(7)

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Question 977973: Having problems with this problem 9log9(7)
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+9%2Alog%28+9%2C+7+%29+
+log%28+9%2C+7%5E9+%29+
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I can rewrite this as:
+9%5Ex+=+7%5E9+
I can take the log base 10 of both sides
+x%2Alog%28+10%2C+9+%29+=+9%2Alog%28+10%2C7+%29+
+x+=+9%2Alog%28+10%2C7+%29+%2F+log%28+10%2C9+%29+
+x+=+%28+9%2A.8451+%29+%2F+.9542+
+x+=+7.6059+%2F+.95423+
+x+=+7.9707+
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check:
+9%5E7.9707+=+7%5E9+
+40362752.05+=+40353607+
The error is due to rounding off, I think
They may want an "exact" answer and not a
calculated answer. That would be in terms of
roots and powers. Hope this is OK.