If vec$(d_1)+$vec$(d_2)=5\mathrm{.}0$vec$(d_3),$vec$(d_1)-$vec$(d_2)=3\mathrm{.}0$vec$(d_3)$ and vec$(d{)}_3=2\mathrm{.}1$hat$(i)+4\mathrm{.}5$hat$(j),$ then what are $($a$)$ the $x$ component of vec$(d_1),($b$)$ the y component of vec$(d_1),($c$)$ the $x$ component of vec$(d_2),$ and $($d$)$ the $y$ component of vec$(d_2)?$