I need to know how to get to reduced row echelon form

Hello,
The matrix cell operations (row calculations, column operation) are accessed as follows:

Press [Menu] button. Highlight [MATRIX] icon and press [EXE]. The list of matrices is diplayed. If you already created the matrix, it will be listed and you can select it (using the arrows) and press [EXE].
Three menu items are displayed:
F1:R.OP (Swap, XRw,XRw->,Rw->
F2:ROW (Del, Ins, Add)
F3: COL (Del, Ins, ADD)

Matrix Operations are accessed in RUN screen by pressing [OPTN] and selecting [F2:MAT] . Availabble options ( they are commands) are
F1: Mat displays identifier Mat on screen
F2: M->L converts a matrix to a list
F3: Det Calclates the determinant
F4: Trn Calculates the transpose of a matrix
F5: Aug Augments a matrix
F6 -> accesses additional operations
F1:Iden Create an identity matrix with specified dimensions
F2:Dim
F3: Fill

In addition to the foregoing you have the matrix operations (+, -, x, square, inverse).
However there is an additional piece of software that performs the row echelon reduction on the CFX9850GBPlus. The information is available here (page 13: program ROWREDA)

The program can be downloaded from this site.

Hope it helps.