Jawabanmu

2014-09-10T17:51:13+07:00
(4x+3y-2z)+ (4a+2y-4z)
= 4x + 3y - 2z + 4a + 2y -4z
= 4x + 3y + 2y - 2z - 4z + 4a
= 4x + 5y - 6z + 4aa