2i - j + k and 3i + 4j + k
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Answer:
see this
Step-by-step explanation:
if we have to add than
(2i-j+k) + (3i+4j+k)
= 5i+ 3j +2k
and if we have to subtract than
(2i-j+k) - (3i+4j+k)
= -1i-5j
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