How Do You Determine Vertical Reactions Using Macaulay's Method?

[ar202]

Homework Statement

ok so not sure I'm in the right place but worth asking! I have a beam which is fixed and then pinned in two places. Using macaulays method, am i supposed to work out the vertical reaction at both pins left of the cut?

Homework Equations

Here's a terrible drawing of what I am dealing with

http://i.imgur.com/HNPkH.png

The Attempt at a Solution

 

[SteamKing]

Beats me. It might help if you post the text of your assignment.