$3)(\backslash (\backslash$mathbf$\{25\}\backslash$mathbf$\{$~ p t s$\})\backslash )$ For given concentrated forces and moment

a$)(15$ pts $)$ Determine the equivalent force and couple moment acting at point B that will replace the given load system.

b$)(10$ pts $)$ Determine the single resultant force that will replace the given loads. Specify where this force would act, measured in horizontal and vertical distances from point B$.$

$4)(\backslash (\backslash$mathbf$\{25\}\backslash$mathbf$\{$~ p t s$\}\backslash ))$ Replace the given loading by an equivalent force and couple moment acting at point O $.$