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40=-2/5c
We move all terms to the left:
40-(-2/5c)=0
Domain of the equation: 5c)!=0We get rid of parentheses
c!=0/1
c!=0
c∈R
2/5c+40=0
We multiply all the terms by the denominator
40*5c+2=0
Wy multiply elements
200c+2=0
We move all terms containing c to the left, all other terms to the right
200c=-2
c=-2/200
c=-1/100
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