How do you do this without logs?

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Dragon
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#1
Report 17 years ago
#1
This is probably something really obvious, plz don't take the piss...

Page 98 edexcel P1 book Q.48

Given that 27^(3x+1)=9^y
(a) obtain the expression for y in the form y=ax+b, where a and b are constants.
(b) solve the equation 27^(3x+1)=9, giving your answeras an exact fraction.

Thnx for the help, i'm gunna need all i can get before monday
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