r+11-3r+15=7

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Solution for r+11-3r+15=7 equation: 



r+11-3r+15=7

We move all terms to the left:

r+11-3r+15-(7)=0

We add all the numbers together, and all the variables

-2r+19=0

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

-2r=-19

r=-19/-2

r=9+1/2

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