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0.53/0.0416
28.84/2.06
x+2*y-z+3;2*z-2*y-2;2*z-x-(2*y)-5
s/x
2*x^2-x^3+x^1+3;2*x^3-2*x^2-2;2*x^3-(2*x^2)+(-x)^1-5
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