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0=(-0.2x^2)+((x^2)/20)
We move all terms to the left:
0-((-0.2x^2)+((x^2)/20))=0
We add all the numbers together, and all the variables
-((-0.2x^2)+(x^2/20))=0
We multiply all the terms by the denominator
-((-0.2x^2)+(x^2=0
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