Question $2[20$ points$]$: Addition Using $2$s Complement

Given X and Y two signed numbers represented in decimal, where X $=+49$ and Y $=+17.$

Solve the following by translating from base ten to two$$s complement using $7$ bits for

representing data $($show details$).$ Mention in each case the overflow if exists.

$1.$ X$+$Y $=$

$2.-$X$+$Y $=$

$3.$ X$-$Y $=$

$4.-$X$-$Y $=$