Jawabanmu

2014-09-08T19:32:40+07:00
15i + 14b + 13k - 30i - 45j + 51k
= -15i + 14b + 64k - 45j

maaf kalo salag jawabannya
2014-09-08T19:34:12+07:00
(15+(-30)i+(13+51)k+14b+(-45)j
=-15i+64k+14b-45j