3.x — 3y = −6 3x + 3y +z = 9 -4x + 5y + z = 8

PREALGEBRA
15th Edition
ISBN:9781938168994
Author:OpenStax
Publisher:OpenStax
Chapter10: Polynomials
Section10.5: Integer Exponents And Scientific Notation
Problem 10.129TI: Simplify: a. 6.31 b. (6.3)1
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Solve by substitution 

3x - 3y = -6
3x + 3y +z = 9
-4x + 5y + z = 8
Transcribed Image Text:3x - 3y = -6 3x + 3y +z = 9 -4x + 5y + z = 8
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