-4≤x-1≤4
-3≤x≤5
-2≤2+x≤2
-4≤x≤0
общий ответ x=[-3;0]
( (2x+1)/x(x-3) - (2x-1)/x(x+3)) = [(2x+1)(x+3) - (2x-1)(x-3)]/x(x-3)(x+3)= (2x²+ 6x +x +3 - 2x² + 6x+x-3) / x(x-3)(x+3) = 14x / x(x-3)(x+3) = 14/(x²-9)
14/(x²-9) * (x²-9)/7x +1= 2/x+1=(x+2)/x
3х^2-4х=2х^2-10х, х^2+6х+9-9=0, (х+3)^2=3^2, х+3=3, х=-6, х=0.
-1x+1.5x-(4x-8x+3-6x)=-1x+1.5x-4x+8x-3+6x=12.5x-3 вроде так