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1/4=15^x+2

 Jan 25, 2016
 #1
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1/4=15^x+2

1/4-2=15^x+2-2

-7/4=15^x

to bring any exponant down we use ln, so;

ln(-7/4)=xln(15)

ln(-7/4)/ln(15)=x

hope it helped

 Jan 26, 2016

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