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2/5=c+4/5
We move all terms to the left:
2/5-(c+4/5)=0
We add all the numbers together, and all the variables
-(+c+4/5)+2/5=0
We get rid of parentheses
-c-4/5+2/5=0
We multiply all the terms by the denominator
-c*5-4+2=0
We add all the numbers together, and all the variables
-c*5-2=0
Wy multiply elements
-5c-2=0
We move all terms containing c to the left, all other terms to the right
-5c=2
c=2/-5
c=-2/5
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