Need algebra help for solving a 3x3 system of linear equations

Algebra
Tutor: None Selected Time limit: 1 Day

Solve the system:

-x + y +z = -1

x - 2y + z 7

4x + 2y - 2z = -4

answer:

x=

y=

z=

Nov 15th, 2015

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Solution:  x = 1, y = -2 , z = 2


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Nov 15th, 2015

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