Replace the three forces shown by the equivalent load acting at A$.$ Present your answer in vector notation and as a diagram that shows the equivalent force and moment acting at A$.$ Show all steps and formulas.

$[$Ans: $F_{\text{e}\text{q}\text{u}\text{@}A}=83\mathrm{.}3lb$ hat$(i)-125lb$ hat$(j),M_{\text{e}\text{q}\text{u}\text{@}A}=-461\mathrm{.}9ft*lb$ hat$(k)]$