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2.80=7c+0.75
We move all terms to the left:
2.80-(7c+0.75)=0
We add all the numbers together, and all the variables
-(7c+0.75)+2.8=0
We get rid of parentheses
-7c-0.75+2.8=0
We add all the numbers together, and all the variables
-7c+2.05=0
We move all terms containing c to the left, all other terms to the right
-7c=-2.05
c=-2.05/-7
c=2.05/7
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