# Gaussian Elimination and Back Substitution

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X + 2y + z = 0

-3x + 3y + 2z = -7

4x - 2y - 3z = 2

https://brainmass.com/math/matrices/gaussian-elimination-and-back-substitution-33631

#### Solution Preview

The system is

x+2y+z=0 (1)

-3x+3y+2z=-7 (2)

4x-2y-3z=2 (3)

By the Gaussian Elimination, we have the followings.

Step1: (2)+3*(1) and we get

x+2y+z=0 ...

#### Solution Summary

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