Diketahui vektor a=-2i-8j+6k,b=5i+4k-5k dan c=3i+4j-2k jika 5d+3a+2b=2c+3d-2b vektor d adalah?

5d + 3(-2 -8 +6) + 4(5 4 -5)= 2 (3 4 -2) + 3d
2d=(6 24 -18) + (-20 -16 +20) + ( 6 8 -4)
2d=(-8 16 -2)
d (-4 8 -1)
d(-4i + 8j -1k)