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x-2(-1/5x-2)=4
We move all terms to the left:
x-2(-1/5x-2)-(4)=0
Domain of the equation: 5x-2)!=0We multiply parentheses
x∈R
x+2x+4-4=0
We add all the numbers together, and all the variables
3x=0
x=0/3
x=0
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