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18=6.4+0.6c
We move all terms to the left:
18-(6.4+0.6c)=0
We add all the numbers together, and all the variables
-(0.6c+6.4)+18=0
We get rid of parentheses
-0.6c-6.4+18=0
We add all the numbers together, and all the variables
-0.6c+11.6=0
We move all terms containing c to the left, all other terms to the right
-0.6c=-11.6
c=-11.6/-0.6
c=19+0.2/0.6
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