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21/3c=2
We move all terms to the left:
21/3c-(2)=0
Domain of the equation: 3c!=0We multiply all the terms by the denominator
c!=0/3
c!=0
c∈R
-2*3c+21=0
Wy multiply elements
-6c+21=0
We move all terms containing c to the left, all other terms to the right
-6c=-21
c=-21/-6
c=3+1/2
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