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-1/2c=20
We move all terms to the left:
-1/2c-(20)=0
Domain of the equation: 2c!=0We multiply all the terms by the denominator
c!=0/2
c!=0
c∈R
-20*2c-1=0
Wy multiply elements
-40c-1=0
We move all terms containing c to the left, all other terms to the right
-40c=1
c=1/-40
c=-1/40
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