12.1185+（X*0.0257）=X
    11.4385+（X*0.0257）=X
    12.0353+（X*0.0257）=X
    5/6-0.5x=3/8
    12.3234+（X*0.0257）=X
    15.2734+（X*0.0257）=X
    e^x+x/2=0
    x/0.5-x/1.65=2.76
    20x^2-47x+24=0
    lnx=-1.6
    6/(1.8+x)=x/(x-0.6)
    x×x=(2-x)(5-x)
    3x²+4x²=(4x+1)²
    4x+1/2×(4-x)² = 10
    18x^2+39x+20=0
    18x2+39x+20=0
    xx+7/2x-2＝－2
    x²-6x+7
    xxx-6x+7
    x3-6x+7

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