Considering the points M and N, the vector MN is component form is given by:
MN = [-20, 2, -4]
The vector is given by the subtraction of the coordinates of the endpoint by the coordinates of the start point.
In this problem, for vector MN, we have that:
Hence:
MN = N - M = [-12 - 8, 6 - 4, -7 - (-3)] = [-20, 2, -4]
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