bantu ya no.2 sampe 5 BUAT CARANYA YA

2 A. x + y = 2+-3 = -1
   B. -z-y   = 2-(-3) = 5
   C. (x-y)-(y+z) =(2-(-3))-(-3+-2) = 5-(-5) = 0
   D. (z-y)+(-x-z) = (-2-(-3))+(-2-(-2)) = 1 + 0 + 1

Bro mau keren di sekolah lo? belajar yang rajin!!