Vector Addition: Solving for C→ in A→+B→+C→=0

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Homework Statement



Let A→ = 15i -40j and B→ = 31j + 18k. Find C→ such that A→+B→+C→=0


The Attempt at a Solution



A + B = 15i - 9j + 18k

C = -15i + 9j -18k
 
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