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-0.6r+0.2=1.8
We move all terms to the left:
-0.6r+0.2-(1.8)=0
We add all the numbers together, and all the variables
-0.6r-1.6=0
We move all terms containing r to the left, all other terms to the right
-0.6r=1.6
r=1.6/-0.6
r=-2+0.4/0.6
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