# exponential equation

• October 19th 2008, 05:32 PM
xkv8r
exponential equation
I'm a little lost... I get all messed up when new things get thrown in please help!
solve
7*3^x=10-3^x
it has to be an exact answer... I don't know how to arrive there!
• October 19th 2008, 05:39 PM
skeeter
$7 \cdot 3^x = 10 - 3^x
$

$8 \cdot 3^x = 10$

$3^x = \frac{5}{4}$

can you finish?
• October 19th 2008, 05:47 PM
xkv8r
I feel a little stupid now... thank you very much for your help!