2x+3＝6
    4080400*4080400-40804000*2x+x²＝x
    1+X∧-1/3=0
    1+X∧1/3=0
    x^4+x^2-1/2=0
    x^4+x^2-1=0
    X+（X*0.4）=10000
    8x∧3-x-2=0
    X+3140707.82-X/1.06*0.06+(3140707.82-X/1.06*0.06)*0.12+(635700000+X)*0.0003=20670000
    X+3589380.56-X/1.06*0.06+(3589380.56-X/1.06*0.06)*0.12+(631800000+X)*0.0003=24570000
    eabsx-2×x^e
    x^2-4x+4=0
    x-x=1
    (x-1)×50=(x+0.5)×60
    (x+1)×7=(x-1)×8
    1/3=100x/120(14-x)
    1/3=100x/120(14-x)
    （40.221+x）×0.85＝40.221+69.242-X
    （40.221+x）×0.85＝40.221+70.242-X
    （40.221+x）×0.85＝40.221+71.242-X

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