Respuestas

2012-05-22T02:05:48+02:00

x-[4-(9x-1)+5]=3(3x-6)

x-[4-(9x-1)+5]=9x-18

x-[(9x-1)+1]=9x-18

x-[9x]=9x-18

8x=9x-18

18=9x-8x

18=x