SYSTEMS OF EQUATIONS Gauss-Jordan Reduction (Page 4 of 7)

Now use *row+ one last time to eliminate -1.6 in the second position of column three. We must multiply row three by 1.6 and add this to row two, replacing row two.

 MATRX key. [MATH] Up arrow key. F: menu selection. 1.6 Comma key. MATRX key. 1: menu selection. Comma key. 3
 Comma key. 2 Right parenthesis key. ENTER key.		 Calculator screen image.

The augmented matrix is now in reduced row-echelon form. From this matrix we can quickly determine the solution of the original system of equations to be (-1, 2, -2).
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