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Evaluate the following vector expression:

1- $$\left(\begin{array}{l}{2} \\ {4}\end{array}\right)+\left(\begin{array}{c}{1} \\ {-1}\end{array}\right)$$

= $$\left(\begin{array}{l}{3} \\ {3}\end{array}\right)$$

2- $$\left(\begin{array}{c}{1} \\ {-3}\end{array}\right)-4\left(\begin{array}{l}{2} \\ {1}\end{array}\right)$$

$$\Rightarrow\left(\begin{array}{c}{1} \\ {-3}\end{array}\right)+\left(\begin{array}{c}{-8} \\ {-4}\end{array}\right)$$

$$=\left(\begin{array}{c}{-7} \\ {-7}\end{array}\right)$$

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