Say I want to write a set of equations in a systematic way, more like the ones in a matrix but without the matrix parenthesis on the left and right-hand sides.
A=1 A=2.5 C=8
B=9 B=0 A=2
B=9 H=2.2 F=3
But I want each of the letter to start on the same point. In the example that I have written the first column looks good, but the third column does not. In the third column I want the F to be perfectly under A and A to be perfectly under C. I have tried to put a certain "\hspace" between them but I got dizzy as I have many rows and columns and I want them to look neat. Please note that I can not put those in a table. I want them loose and now that we are at it, I only wonder if this can be done, how to numerate the whole data by one equation number on the right hand side? Maybe (3.12) beside the last row on the right-hand side or a big brace on the right hand side of all rows that say in the middle after the brace (3.12)?