66.26*x➗1608.9=0.0177
    66.26*x➗X=0.0177*x
    66.26*x➗X=0.0177x
    66.26x/x=0.0177
    66.16x=0.0177x
    66.16x=0.0177
    0.2x=（x-174）
    33.724ln(x) - 3.9482= 84.1
    33.724ln(x) - 3.9482= 50
    33.725ln(x) - 6.2487= 84.1
    33.725ln(x) - 6.2487= 50
    sin(x)+cos(x)=0.2
    sin(x)*cos(x)=-12/25
    （x-1.444）*300-0.2=2
    （x-1.444）*300-0.2=1
    （x-1.479）*300-0.1=1
    s＾4+24s＾3+100s＾2+40s+1389=0
    (x-1.399)*200-0.1=1
    X^2+25X-5850=0
    (x-4.812)*400-0.1=6

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