Answered: 3) Solve the following system of…

3) Solve the following system of equations. Carefully show how you arrived at your answers. 4x+2y-z=21 -x-2y+2z =13 3x-2y+5z = 70

Elementary Algebra

17th Edition

ISBN:9780998625713

Author:Lynn Marecek, MaryAnne Anthony-Smith

Publisher:Lynn Marecek, MaryAnne Anthony-Smith

Chapter5: Systems Of Linear Equations

Section5.1: Solve Systems Of Equations By Graphing

Problem 57E: Without graphing the following systems of equations, determine the number of solutions and then...

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Question

Help (3)

3) Solve the following system of equations. Carefully show how you arrived at
your answers.
4x+2y-z=21
-x-2y+2z =13
3x-2y+5z = 70

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