30/x=30/(x-1.5)-x

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30/x=30/(x-1.5)-x

30/x=30/(x-1.5)-x
30(x-1.5)=30x-x^2(x-1.5)
30x-45=30x-x^3+1.5x^2
x^3-1.5x^2-45=0
2x^3-3x^2-90=0

200

30/x=30/(x-1.5)-x (x+30)*(x-18)=x*x 0.8x=x-30 x= x ( x-30)= -67.5 X=? x-30-0.2x=0.5x 3X+30+X+X-15=? x+35=(x+3x)*30% 60x（x-4)=30x 80%x+30-x=10%x X-30%X+8-X=20 30%x=50%x-20x （25-30）*1.5%x+x=1323 x=? x=1.5x－30 1.5x+27=30+0.5x 1.5x+27=30+0.5x X+1.5X=30怎么算? x-(30-x)=(30-x)-x/3,怎么解 x-30%x=(280-x)+30%x