3^r-2=9

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Solution for 3^r-2=9 equation: 



3^r-2=9

We move all terms to the left:

3^r-2-(9)=0

We add all the numbers together, and all the variables

3^r-11=0

We move all terms containing r to the left, all other terms to the right

3^r=11

r=11/1

r=11

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