Jawabanmu

2014-09-09T21:13:54+07:00
1. 15i-30i+13k+51k+14b-45j
-15i+64k+14b-45j
2. 3-9-17x+4x+35z+23y
-6-13x+35z+23y
ini setau aku:) maaf kalo salah
2014-09-09T21:58:41+07:00
1.= 15i - 14b + 13k - 30i - 45j + 51k
   = -14b - 15i - 30i - 45j + 14b + 51k
   = -14b -45i -45j + 65k
2. = 3 - 17x + 35z + 4x + 23y - 9
    = 3 - 9 - 17x + 4x + 23y + 35z
   = -3 -13x + 23y + 35z

Maaf kalo salah^^