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-1(c-0.65)=-2.8
We move all terms to the left:
-1(c-0.65)-(-2.8)=0
We add all the numbers together, and all the variables
-1(c-0.65)+2.8=0
We move all terms containing c to the left, all other terms to the right
-1(c-0.65)=-2.8
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