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7-0.75c=2.80
We move all terms to the left:
7-0.75c-(2.80)=0
We add all the numbers together, and all the variables
-0.75c+7-(2.8)=0
We add all the numbers together, and all the variables
-0.75c+4.2=0
We move all terms containing c to the left, all other terms to the right
-0.75c=-4.2
c=-4.2/-0.75
c=5+0.45/0.75
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