<PRE><B>Question 146083</B>
Please solve the systems of equations for all variables using a matrix.
 {{{x+2z=7}}}
 {{{3x+y=5}}}
 {{{2y-3z=-5}}}
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1 2 0=7 
0 3 1=5
2 0-3=-5,
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Comment:  
1st equation should be 1 0 2
2nd equation should be 3 1 0
3rd equation should be 0 2 -3
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Final answer should be 
x = 1
y = 2
z = 3
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Cheers,
Stan H.
r1 x-2+ r3
1 2 0=7
0 3 1=5
0-4-3=-19 
r2 Divide by 3
1 2 0=7
0 1 3=0.6 
0-4-3=-19 
r3 divide by 4
1 2 0=7
0 1 3=0.6
0 0 1=-15 
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