Răspuns :
Se rezolva in ordinea indicata de paraneze, iar apoi in ordinea in care sunt scrise operatiile:
13y-2y+(6y-3y)-y=
13y-2y+3y-y=13y
(16a + 12a +5a) - (31a - 22a) =
33a - 9a = 24a
13y-2y+(6y-3y)-y=
13y-2y+3y-y=13y
(16a + 12a +5a) - (31a - 22a) =
33a - 9a = 24a