Solve the liner system:  2X1 + 3X2 -3X3 + X4 + X5 = 7 3X1 + 2X3 + 3X5 = -2 2X1 + 3X2 -4X4  = 3 X3 + X4 + X5 = 5

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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(I need the comments for the each step as much as possible, because I want to understand the solve, Thank you):

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Solve the liner system: 

2X1 + 3X2 -3X3 + X4 + X= 7

3X1 + 2X3 + 3X= -2

2X1 + 3X2 -4X4  = 3

X3 + X4 + X= 5

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