Solve for x
x=\frac{1}{3}\approx 0.333333333
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3x+x^{2}-x^{2}=1
Subtract x^{2} from both sides.
3x=1
Combine x^{2} and -x^{2} to get 0.
x=\frac{1}{3}
Divide both sides by 3.
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