Hi,

I am wondering how to solve an 8x8 matrix using Excel equations.

Supposing the situation is

column
A B C D E F G H I
1 7 4 2 9 .... 2| 5
2 10 3 6 ... | 1
r 3 2 ... |
o 4 .
w 5 . data
6
7
8

In other words, it is solving the system

A1*x[1]+B1*x[2]+C1*x[3]+D1*x[4]+E1*x[5]+F1*x[6]+G1*x[7]+H1*x[8]=I1
A2*x[1]+B2*x[2]+C2*x[3]+D2*x[4]+E2*x[5]+F2*x[6]+G2*x[7]+H2*x[8]=I2
A3*x[1]+B3*x[2]+C3*x[3]+D3*x[4]+E3*x[5]+F3*x[6]+G3*x[7]+H3*x[8]=I3
..
..
A8*x[1]+B8*x[2]+C8*x[3]+D8*x[4]+E8*x[5]+F8*x[6]+G8*x[7]+H8*x[8]=I8

I have already done this but my answers are wrong. It took several
manipulations and created about 16 blocks on the spreadsheet in 230
rows. In its final form the solution should have a diagonal of all 1's
between A1 and H8 and the rest zeros, except column I should be the
solutions to each x[1],x[2],..,x[8].

Does anyone know what I'm talking about? Any help would be appreciated.
Is there a formula that will compute the matrix all in one formula?

Jon