SYSTEMS OF EQUATIONS Gaussian Elimination (Page 10 of 13)

All that remains is to change the leading entries in rows two and three to 1's. Let's change row two first. We can use the *row command to multiply row two by -1/5. For this command, you must specify the value by which you are multiplying, then the matrix name, then the row number.

 MATRX key. [MATH] Up arrow key. E: menu selection. Negation key. 1 Divide key. 5 Comma key. MATRX key. 1: menu selection.
 Comma key. 2 Right parenthesis key. ENTER key.		 Calculator screen image.

If you want to avoid decimals and have the results displayed as fractions, add the Frac command. For now, decimals will suffice.
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