12r-2r+-15r-r=7

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Solution for 12r-2r+-15r-r=7 equation: 



12r-2r+-15r-r=7

We move all terms to the left:

12r-2r+-15r-r-(7)=0

determiningTheFunctionDomain
12r-2r-15r-r-7+=0

We add all the numbers together, and all the variables

-6r=0

r=0/-6

r=0

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