(62.9*0.97-X)*0.83-X*0.02-62.9*0.5=((114*0.97-23)*0.83-23*0.02-114*0.5)*0.55
    （62.9*0.97-X）*0.855*0.92-62.9*0.5=（114*0.97-23）*0.855*.92*.55-114*0.5*0.55
    31.3+x-x*0.015=50
    (62.9*0.97-X)*0.83-X*0.02-62.9*0.5=((114*0.97-23)*0.83-23*0.02-114*0.5)*0.55
    (62.9*0.97-X)*0.83-X*0.02-62.9*0.5=((114*0.97-X)*0.83-X*0.02-114*0.5)*0.55
    （62.9*0.97-X）*0.855*0.92-62.9*0.5=（（114*0.97-23）*0.855-114*0.5）*0.55
    x^2-x*sqrt(22+x^2)=-9
    0.02507*(73-x)*x*61.2=741.1320
    108x-12x²=96
     sinX+tanX=1
    (4/3k-2)/k+2-4/3k+√((4/3k-2)^2/k^2+(2-4/3k)^2)=12
    (4/3k-2)/k+2-4/3k+√((4/3k-2)^2/k^2+(2-4/3k)^2)=0
    3x/2=9/（6x+8）+3/（2x）
    3x/2＝9/（4x+8）+3/2x
    （1000-10x）÷√x=2
    （26.493+x）×2.45＝26.493+69.278-x
    （26.493+x）×2.65＝26.493+69.278-x
    （26.493+x）×2.85＝26.493+69.278-x
    （26.493+x）×3.05＝26.493+69.278-x
    （26.493+x）×3.05＝26.493+70.278-x

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