$3\mathrm{.}15$Simplify the following Boolean function F$,$together with the don't$-$care conditions d$,$and then express the simplified function in sum$-$of$-$minterms form:

$($a$)$

F$($x$,$y$,$z$)=(2,3,4,6,7)$

d$($x$,$y$,$z$)=(0,1,5)$