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OpenStudy (anonymous):
7 * 3^3x-2 = 21. Can anyone please answer this question with their work.. Thanks!
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OpenStudy (jhannybean):
Is your question: \(7 \cdot 3^3 x-2=21\)? or is it \(7\cdot 3^{3x} -2=21\)?
OpenStudy (anonymous):
\[7 .3^{3x-2} = 21\]
OpenStudy (anonymous):
7 multiplied by.....
OpenStudy (jhannybean):
Oh alright
OpenStudy (jhannybean):
Divide both sides by 7 first.
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OpenStudy (jhannybean):
What does your equation become?
OpenStudy (jhannybean):
Once you do that, you'll see that you have the same base, and therefore can evaluate the powers.
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