For problems $8,9$ and $10,$ convert the following decimal numbers into $8$ bit binary numbers as required for $2\text{'}$s complement math, and perform the indicated operations. Circle or bold your binary answer and show your work. Notes: Remember that positive numbers are represented in sign$-$magnitude format in $2\text{'}$s complement math

$8.+48+30=$

$9.+48-30=$

$10.-48+30=$