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= 3i - j + 2k + 4i - 2j + 4k - 6i - 3j
= 3i + 4i - 6i - j - 2j - 3j + 2k + 4k
= i - 9j + 6k
b. 3(-3i + j - 2k + 2i - j + 2k + 2i + j)
= -9i + 3j - 6k + 6i - 3j + 6k + 6i + 3j
= -9i + 6i + 6i + 3j - 3j + 3j - 6k + 6k
= 3i + 3j
(3i -1j + 2k) + (4i -2j + 4k) - (6i + 3j)
di jumlah/ dikurangkan yang sama,.,
= 1i - 6j + 6k
b. 3( (-3i + 1j - 2k) +( 2i - 1j +2k) + (2i + 1j) )
(-6i +3j -6k) + (6i -3j +6k ) + ( 6i + 9j)
= 6i +9j