And what are your units?
On an aside, it's so warm in my room - it's like 28. And it's been warm for a while too - for almost 4 now. I tried to cool things down a bit by opening a gap in my window - a gap of 2.
Now - good luck deciphering that.
And then they wonder why nobody wants to...
Once you've found your reactions from the applications of Statics and your knowledge of Deformations, the determination of the stresses in a bar section reduces to
where P is the resultant force acting on each section. For section AC, P = FBx - 100. Simlarly for the other section...