Mathematics
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    450/X-450/(X+5)=1
    4(2x-4)=3(3x-1)-12
    3x-7(x-1)=3-2(x+3)
    (20-x)x0.8x18082÷1000+18082=18130
    120*120*1000000000000πx8-3*160000x2=4800*4800
    10*(2^0.5)*x+5*(x^2)=20
    (20-x)*0.8*18082/1000+18082=18130
    x^2+15.45x-96.93=0
    10x-5(1-x)=5(0.1x+0.2)-10
    2=√x^3+2
    -2x^5+2x^4+6x^3-2x^2+x+2=0
    4(2x-1)-2(10x-3)=12-3(2x+1)
    2(3-x)=-4(x+5)
    m²-m=2
    7(1-2x)=3(2x+1)+84
    m²+m-4=2
    700cos20=xcos22.5
    700cos20=725cosx
    cosx=54/55
    6x-2(1-x)=6

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