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4*x^2-(15*x)+0*x^5+0*x^4+0*x^3-31 = 0;x
x
3*(x+1)-(2*(x+2)) = 6-(2*x)-4;x
x
y/2+1/3 = 7/6;y
y
3.995;17
5;7;3;7;0;0
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