# Systems of Equations : Solve using Augmented Matrix

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Solve the following system of equations by performing elementary row operations on the augmented matrix.

x1-2x2 +2x4 = 6

2x1-4x2+x3-x4 =-2

3x1+6x2-x3-x4=-4

x1-2x2+x3-3x4=-8

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##### Solution Summary

A system of equations is solved by performing elementary row operations on the augmented matrix.

##### Solution Preview

We perform row operations on the augmented matrix

1 -2 0 2 6

( 2 -4 1 -1 -2 )

3 6 1 -1 -4

1 -2 1 -3 -8

1 -2 0 2 6

( 0 0 1 -5 -14 ) [row2-2(row1)]

0 12 ...

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