Solve the systems of equation by using Gauss Jordan elimination method.
2X-Y+2Z=31
2X-Y+Z=28
X+3Y-Z=4
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The augmented matrix displays the coefficients of the variables, and an additional column for the constants.
[latex]\displaystyle{\left[\matrix{{1}&{2}&-{1}&{\mid}&{3}\\{2}&-{1}&{2}&{\mid}&{6}\\{1}&-{3}&{3}&{\mid}&{4}}\right]}[/latex]
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