# Consider two vectors A=3i - 1j and B = - i - 5j, how do you calculate A - B?

$A - B = 4 i + 4 j$
$A - B = \left(3 i - j\right) - \left(- i - 5 j\right)$
$\Rightarrow A - B = i \left(3 + 1\right) + j \left(5 - 1\right)$
$\Rightarrow A - B = 4 i + 4 j$