Question 523317
x+y+z-2w  =2
0+2y+z+3w =4
2x+y-z+2w =5
x -y+0+w  =4
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I solved it using a TI-84 calculator:
x = 13/5 
y = -2/5
z = 9/5
w = 1
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Cheers,
Stan H.
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