bài 1. 5x-2/3 = 5-3x/2 10x+3/12= 1+ 6+8x/9 7/8x – 5 ( x-9) = 20x + 1.5/6 bài 2. 1/x+1 – 5/x-2= 15/( x+1)(2-x) 1/2x-3 – 3/x( 2x-3)= 5/x 6/x-1 – 4/x-3=

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1. `( 5x-2)/3 = (5-3x)/2`

   `<=>2(5x-2)=3(5-3x)`

   `<=>19x=19`

   `<=>x=1`

   `(10x+3)/12= 1+ (6+8x)/9`

   `<=>3(10+3)=36+8(3+4x)`

   `<=>2x+60=9`

   `<=>x=-51/2`

   `7/8x – 5 ( x-9) = 20x + 1.5/6`

   `<=>7x-40x+360=160x+2`

   `<=>358=193x`

   `<=>x=358/193`

   `1/(x+1 )- 5/(x-2)= 15/(( x+1)(2-x))`

   `<=>(x-2)(2-x)-5(x+1)(2-x)=15(x-2)`

   `<=>x-4x^2+14+15x-30=0`

   `<=>x-2=0`

   `<=>x=2(l)`

   `2x-3 – 3/(x( 2x-3))= 5/x`

   `<=>2x^2(2x-3)-3x(2x-3)-3=5(2x-3)`

   `<=>4x^3-12x^2-x+12=0`

   `(5x)/(2x+2) + 1= 6/(x+1)`

   `<=>5x+2(x+1)=12`

   `<=>7x+2=12`

   `<=>x=10/7`

   Vậy …

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