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January 28, 2015

January 28, 2015

Posted by **Anonymous** on Sunday, April 15, 2012 at 7:34pm.

3^(2a+3)=7^(a-4)

Please Help and Thank you

- Math 12 (Logs) -
**Henry**, Tuesday, April 17, 2012 at 7:58pm3^(2a+3) = 7^(a-4).

(2a+3)*Log3 = (a-4)*Log7.

Divide both sides by Log3:

2a+3 = 1.771(a-4).

2a+3 = 1.771a-7.085.

2a-1.77a = -7.085-3.

0.23a = -10.085.

a = -43.85.

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