Question

al simplificar-[x+{-(x+y)-[-x+(y-z)-(-x+y)]-y}] se obtiene

Answer 1

-[x+{-(x+y)-[-x+(y-z)-(-x+y)]-y}]

−(x−(x+y)−(−x+(y−z)−(−x+y))−y)

−(x+(−x−y)−(−x+y−z+(x−y))−y)

−(x+(−x−y)−(−z+0)−y)

−(x+(−x−y)+z−y)

−(x+(−x−y)+z−y)

=2y-z