110X+140×(60-x)＝7800
    9*x*x*x-18*x*x+10*x-1=0
    x-x*x=9*x*x*(1-x)*(1-x)
    160/64＝x/12.8
    14.28X*0.06+14.28X=5096.96
    16.8x*0.03+16.8x=6434.9
    y+y^3=1
    e^xπ = -1
    exπ = 0
    xx - x - 1 = 0
    x*x - x + 1 = 0
    e^lnx
    x*1.36=4.52
    x*1.41=4.52
    x+1=x^3
    2.2x-1.2x²=324
    14.28x*0.06+14.28x=5096.96
    14.28x*0.03+14.28x=5096.96
    14.28x*0.03+14.28x
    16.8X*0.03+16.8X=6434.9

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