Respuesta :
x=5/6
(x-1)+x+(x+1)=5/2
x-1+x+x+1=5/2
combine
3x=5/2
divide by 3
x=5/2*1/3
x=5/6
(x-1)+x+(x+1)=5/2
x-1+x+x+1=5/2
combine
3x=5/2
divide by 3
x=5/2*1/3
x=5/6