sama caranya ya terimakasi

(1/2.u).v=(2,-3,3).(-1,-2,a)
7 = 2.(-1)+-3.(-2)+3.a
7+2-6= 3a
3a= 3
a= 1
u + 2v = (4+(-2)) i + (-6+(-4)) j + (6+2) k
= 2i -10j + 8k (d)