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    sin(x+sin(x))=0
    sin(x+sin(x))=0
    6x(5+6)+5x=225
    2400x^2-750x-900=0
    x×x-3-2×sinx-3×cosx=0
    (1+x% ) ^3=1.331
    arctan(2x)-arctan(0.1x)-arctan(0.2x)-arctan(26x)=-π/2
    arctan(2x)-arctan(0.1x)-arctan(0.2x)-arctan(26x)=-90
    10000/(125.64+x)+20000/(185.64+x)=150
    10000/(125.64+x)+7800/(185.64+x)+10000/(185.64+x)=150
    (125.64+x/10000)+(185.64+x/7800)+(185.64+x/10000)=150
    (10000/125.64+x)+(7800/185.64+x)+(10000/185.64+x)=150
    4/x-9/(1-x)=0
    10000/(125.64+x)+20000/(185.64+x)=150
    2150000000=13.8*1600x*(1176-x/2)
    (x+30)/x=1.25
    x^4-2x^3+3x^2-2x+1=0
    A*0.5A-A=24
    (X➕50)➗X=1.6293
    29.25*(1-q^16)/(1-q)=3782.6

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