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March 5, 2015

March 5, 2015

Posted by **Bethany** on Saturday, April 12, 2008 at 6:08pm.

Problem: 9^(x+6)=7x

My answer was: -52.458

The correct answer is: -51.138

I have checked my input on my calculator, and cannot figure it out.

- Math -
**Bethany**, Saturday, April 12, 2008 at 6:10pmSorry, my problem is:

9^(x+6)=7^x

- Math -
**Bobby**, Saturday, April 12, 2008 at 6:16pm-52.4576 is the correct answer.

ln9^(x+6)=ln7^x

(x+6)*ln(9)=x*ln(7)

(x+6)/x=ln(7)/ln(9)

x/x+6/x=.885622

1+6/x=.885622

6/x=.885622-1

6/x=-.114378

x=6/(-.114378)

x=-52.4576

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