6th Edition

ISBN: 9780134434681

Author: Tom Pirnot

Publisher: PEARSON

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Textbook Question

Chapter 7.6, Problem 74E

Math in Your Life: Between the Numbers.

The systems you have solved in this section have had two equations and two unknowns. When systems have three unknowns, the solution is in the form of an ordered triple. Show that the triple ( 1 , 3 , − 5 ) is a solution to each of the following equations and thus solves the system of equations:

x + 2 y + z = 2 − 3 x + y + z = − 5 4 x − y − 2 z = 11

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Chapter 7.6, Problem 73E

Chapter 7.6, Problem 75E

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Mathematics All Around (6th Edition)

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Solution Summary: The author explains that the ordered triple (1,3,-5) is a solution to the system of equations.

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