Perform the following operations in the $2\text{'}$s complement system. Use eight bits $($including the sign bit$)$ for each number $($you will need to represent the values in $2\text{'}$s complement first and then continue with the relevant operation$).[2$ pts each$]$

a$)$ Add $+14$ to $-17$

b$)$ Add $-48$ to $-80$