# Given the displacement vectors A= (3i – 4j + 4k)m, and B= (2i + 3j – 7k)m, how do you find the magnitudes of the vectors C= A+B?

I found: $C = A + B = \left(5 i - j - 3 k\right) m$
$C = \left[\left(3 + 2\right) i + \left(- 4 + 3\right) j + \left(4 - 7\right) k\right] m =$
$= \left(5 i - j - 3 k\right) m$