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    10x-28=3x+14
    (2x-80+x)+(x+80-x)=100
    (2x-80)+(x+80)=100
    (x+80)+(2x-80)=100
    x÷(100+x)=85%
    12(x+0.9)=1.5*16
    (10-450l)/[(0.1-l)0.1] = 500
    (10-450l)/(0.1-l)0.1=500
    x^4+4x^3*(1-x)-x^3=4*(1-x)^4+16*(1-x)^3*x-4*(1-x)^3
    2/5-3X=3/3-5X
    3(2X+5)=2(4X+3)+1
    1+X=3
    3=1-2(4+X)
    49m^2-243m+63=0
    49m^2-243m+63=0
    540(x+0.1)=2x600x2+0.6
    8x-2.6x=54
    1÷(8/3)=(1/20)×(x/100)
    ((3√(3)-3)/2)^(3)y^5=(9y-2((3√(3)-3)/2)^(2)y^2)/(6-9√(2)+9)
    2 x^(2)-225 x+8433=0

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