Question

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

Answer 1

a. -[x+{-(x+y)-[-x+(y-z)-(-x+y)]-y}]
b. -[x+{-(x+y)-[-x+(y-z)-(-x+y)]-y}]
c. -[x+{-(x+y)-[-x+y-z+x-y]-y}]
d. -[x+{-(x+y)-[-z]-y}]
e. -[x+{-(x+y)-[-z]-y}]
f. -[x+{-x-y+z-y}]
g. -[x+{-x-2y+z}] 
h. -[x+{-x-2y+z}]
i. -[x-x-2y+z]
j. -[-2y+z]
k. -[-2y+z] 
l. 2y-z