Situation $7$:

Determine the reactions at $A,B$ and $C$ and the maximum positive and negative moments.

Answers: $Ra=101\mathrm{.}8kN,Rb=311\mathrm{.}06kN,Rc=87\mathrm{.}14kN,(+)$ Mmax $=203\mathrm{.}6kN-m,(-)Mnax=189\mathrm{.}2kN-m$