216=6^2r^-11

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Solution for 216=6^2r^-11 equation: 



216=6^2r^-11

We move all terms to the left:

216-(6^2r^-11)=0

We get rid of parentheses

-6^2r^+11+216=0

We add all the numbers together, and all the variables

-6^2r^+227=0

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

-6^2r^=-227

r=-227/1

r=-227

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