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-0.88-0.68r=-0.2272
We move all terms to the left:
-0.88-0.68r-(-0.2272)=0
We add all the numbers together, and all the variables
-0.68r-0.6528=0
We move all terms containing r to the left, all other terms to the right
-0.68r=0.6528
r=0.6528/-0.68
r=-0.6528/0.68
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