Solve using back-substitution. (2x + 3y - z+w = 24 y+z=w=2 3z + w = 7 5w = 20 What is the value of x in the solution?

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
ChapterP: Prerequisites
SectionP.8: Solving Basic Equations
Problem 6E
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Solve using back-substitution.
(2x + 3y - z+w = 24
y+z=w=2
3z + w = 7
5w = 20
What is the value of x in the solution?
Transcribed Image Text:Solve using back-substitution. (2x + 3y - z+w = 24 y+z=w=2 3z + w = 7 5w = 20 What is the value of x in the solution?
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