A=matrix(5, 5, [16, 3, 4, 1, 12, 10.24, 6, 3.2, 1, 19.2, 5.76, 7, 2.4, 1, 16.8, 0, 8, 0, 1, 0, 5.76, -1, 2.4, 1, -2.4])
b=matrix(5, 1, [-9, -36, -49, -64, -1])
print A.augment(b).rref()
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[ 1.00000000000000 0.000000000000000 0.000000000000000
-1.11022302462516e-16 0.000000000000000 1.56250000000000]
[ 0.000000000000000 1.00000000000000 0.000000000000000
-1.11022302462516e-16 0.000000000000000 -5.99999999999999]
[ 0.000000000000000 0.000000000000000 1.00000000000000
4.44089209850063e-16 0.000000000000000 3.37507799486048e-14]
[ 0.000000000000000 0.000000000000000 0.000000000000000
1.00000000000000 0.000000000000000 -16.0000000000001]
[ 0.000000000000000 0.000000000000000 0.000000000000000
-8.88178419700125e-16 1.00000000000000 -2.96059473233376e-15]
[ 1.00000000000000 0.000000000000000 0.000000000000000 -1.11022302462516e-16 0.000000000000000 1.56250000000000]
[ 0.000000000000000 1.00000000000000 0.000000000000000 -1.11022302462516e-16 0.000000000000000 -5.99999999999999]
[ 0.000000000000000 0.000000000000000 1.00000000000000 4.44089209850063e-16 0.000000000000000 3.37507799486048e-14]
[ 0.000000000000000 0.000000000000000 0.000000000000000 1.00000000000000 0.000000000000000 -16.0000000000001]
[ 0.000000000000000 0.000000000000000 0.000000000000000 -8.88178419700125e-16 1.00000000000000 -2.96059473233376e-15]
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