Perform the following calculation in $8$ bit Two's complement. Show the

steps of your work $($carries and sums$).$ Additionally, indicate for each: $1)$

whether there was a carry out; $2)$ whether there was overflow.

a$.28-25$

b$.58-20$

c$.105+45$

d$.-12-4$

e$.$ How do we detect and solve the overflow?