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Solve the system by the substitution method.   3x−y = 21 x+8y = 7

Solve the system by the substitution method.   3x−y = 21 x+8y = 7

Elementary Algebra
Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter5: Systems Of Linear Equations
Section5.2: Solve Systems Of Equations By Substitution
Problem 5.40TI: Solve the system by substitution. {5x3y=2y= 5 3x4
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Solve the system by the substitution method.
 
3x−y
=
21
x+8y
=
7
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