Viết sai đề rùi nha bn
Đề đây, mk giải lun
(x-1)/13-(2x-13)/15=(3x-15)/27-(4x-27)/29
<=>15(x-1)/195-13(2x-13)/195=3(x-5)/27-4x-27/29
<=>15x-15-26x+169/195=29(x-5)/261-9(4x-27)/261
<=>-11+154/195=29x-145-36x+243/261
<=>-11x+154/195=-7x+98/261
<=>(11x+154)261=195(7x+98)
<=>2871x=-21084
<=>x=-14
Vậy x= -14