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0.4c-3+.1.2c=0.2
We move all terms to the left:
0.4c-3+.1.2c-(0.2)=0
We add all the numbers together, and all the variables
0.42c-3.2=0
We move all terms containing c to the left, all other terms to the right
0.42c=3.2
c=3.2/0.42
c=7+0.26/0.42
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