Let u = -51 - 7] and v = -31 + 5) Find u + 2v -81-2) O -111+3] 111+3) 171-3] O -111-3] 17. Choose the best answer. Let u = -51 - 7j and v = -3i + 5j Find u - v -121 + 12j 8i + 2j -81 - 2j -2i - 12j O 21 + 12j