Guass jordan method

Wayyyyyy off topic but.....

So looooong time ago I was able to do the guass Jordan method of substition in seconds on the calculator on the right.

I went to show a college kid how to do it and it seems I forgot.

So I went and bought the updated version to that calculator, the one on the left which is the 2021 version.

Either one has a matrix function, anyone know how to whiz through the matrix process to get an x and y value on either one?

I know it's possible but I need a memory jog.

We are working on 3x3 matrix set ups.

I'm thinking these calculators should be able muscle through the simplex process too and kinda do row echlen form instantly.