0.8（Y-250+62.5）
    0.8（Y-250+62.5）
    0.8（Y-250+62.5）
    sin(x)*cos(23)=sin(x+45)*cos22
    sin(x)*cos(23)=(sin(45)*cos(112-x))/(1-tan(22))
    sin(x)*cos23=(sin45*cos(112-x))/(1-tan22)
    sinx*cos23=(sin45*cos(112-x))/(1-tan22)
    x^2-2340x+210084=0
    x+(x×3%)=194298
    x^2-4/x-2=0
    50 = 0.667x - 26.68
    50 = 1.333x - 53.32
    （0.285+0.005X）*X^1.5=6.289
    s^3+2s^2+3=0
    x*x+2√x*x-4=26
    x*x=4
    1/6x+1/7x+1/12x+5+4=1/2x
    1/6x+1/7x+1/12x+5+4=x
    1/6+1/7+1/12+5+4=x
    4x+2sin2x＝3.14159

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