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-6r-6r=-2-64
We move all terms to the left:
-6r-6r-(-2-64)=0
We add all the numbers together, and all the variables
-6r-6r-(-66)=0
We add all the numbers together, and all the variables
-12r+66=0
We move all terms containing r to the left, all other terms to the right
-12r=-66
r=-66/-12
r=5+1/2
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