Respuesta :
1-(5-3+2-[5-(6-3+1)+2])
1-(5-3+2-[5-(3+1)+2])
1-(5-3+2-[5-4+2])
1-(5-3+2-[1+2])
1-(5-3+2-3)
1-(2-1)
1-1= 0
1-(5-3+2-[5-(3+1)+2])
1-(5-3+2-[5-4+2])
1-(5-3+2-[1+2])
1-(5-3+2-3)
1-(2-1)
1-1= 0