X0+X1+X2+X3+X4+X5+X6+X7+X8+X9+X10+X11=1 X0+X1+X2<=X3+X4+X5+X6+X7+X8+X9+X10+X11 X0<=X1+X2 X1<=X2 X3<=X4 X3+X4<=X5+X6+X7+X8+X9+X10+X11 X5<=X6+X7+X8+X9+X10+X11 X6<=X7+X8+X9+X10+X11 X7<=X8+X9+X10+X11 X8<=X9+X10+X11 X9<=X10+X11 X10<=X11
    X-7=x÷2
    xarctan1/x=0
    xarctan1/x=1/2
    3^x+4^(3-x)=24
    X/126-(92-X)/1000=0.405
    accos0.167
    accos0.167
    accos0.167
    8x-2=0
    -0.5x=3
    -0.3x=15
    e^(-x)*sinx
    x^3-2x+4
    (x+1)^(1/2)=x-4
    r^4-r^3-r^2+2r+4＝0
    x*x8855-11033330x+849658000
    12.5%x+10＝18
    arctanx-arctan0.25x＝46
    arctanx-arctan0.25x＝46

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