Electrical Engineering:

Find the following subtractions:

$($a$)3$E$91-2$F$93.$ Showing expected working:

$1616-2D816-3E{x}_1^1-2F93=$EFE

$($b$)$ F$000-$EFFF

$E-E000-$EFFF

$($c$)91$B$-6$F$2$

$($d$)2$F$00-4000$

$($e$)0300-005$A