I have this problem for orthocenter and circumcenter, but I'll talk about circumcenter for now.

I have these 3 equations of lines:

y = -63/33X +118.364

y= -31/5x +576.8

y= -94/38x +178.684

I found that all 3 intersect at (106.8389, -85.60117). Since I need the exact coordinates and solve it algebraically, I did some graphing and found that the first and second lines would intersect at the same coordinates as all 3 lines, thus giving me the exact intersection. I did teh math, but I got (106.9237288, -86.12711856)

Did I go wrong? How should I do this? I can supply all previous work done to find these 3 lines, please help.