Question

Vectors u = −10i + 3j and v = −3i − 7j. What is u − v?

Answer 1

In order to calculate the subtraction of the vectors, we can do the following steps:

$\begin{gathered} u-v\\ \\ =(-10i+3j)-(-3i-7j)\\ \\ =-10i+3j+3i+7j\\ \\ =(-10i+3i)+(3j+7j)\\ \\ =-7i+10j \end{gathered}$

Therefore the correct option is the first one.