-9r-12r+-13=8

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Solution for -9r-12r+-13=8 equation: 



-9r-12r+-13=8

We move all terms to the left:

-9r-12r+-13-(8)=0

determiningTheFunctionDomain
-9r-12r-13-8+=0

We add all the numbers together, and all the variables

-21r=0

r=0/-21

r=0

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