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45-2.50c=11.50
We move all terms to the left:
45-2.50c-(11.50)=0
We add all the numbers together, and all the variables
-2.50c+45-(11.5)=0
We add all the numbers together, and all the variables
-2.5c+33.5=0
We move all terms containing c to the left, all other terms to the right
-2.5c=-33.5
c=-33.5/-2.5
c=13+1/2.5
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