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do you subtract 3 when doing a positive rational exponent equation?

Guest Apr 17, 2017
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 #1
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Post the problem......it's hard to tell what you're referrring to.......

 

 

cool cool cool

CPhill  Apr 17, 2017
 #2
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the equation that i have to solve is 3x+3=7776

Guest Apr 17, 2017
 #3
avatar+77125 
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I  assume this  is :

 

3x + 3  =  7776         and we can write

 

3^3 * 3x  = 7776         divide both sides by 3^3  = 27

 

3x   =  288             take the log of both sides

 

log 3x   = log (288)     and we can write

 

x * log 3  =  log (288)       divide both sides by log 3

 

x  =  log (288)  / log (3)   ≈  5.155

 

 

cool cool cool

CPhill  Apr 17, 2017

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