x + 2y + 3x + 6y + 5z + 12w = 30 x + 3y – 3z + 2w = – 5 6x – y – z + z + 4w = 11 w = -9

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter9: Systems Of Linear Equations
Section9.5: Multiplication With The Addition-or-subtraction Method
Problem 42WE
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Use inverse method

x + 2y + z + 4w
3x + 6y + 5z + 12w = 30
x + 3y – 3z + 2w = – 5
11
бх — у — z+
w = -9
Transcribed Image Text:x + 2y + z + 4w 3x + 6y + 5z + 12w = 30 x + 3y – 3z + 2w = – 5 11 бх — у — z+ w = -9
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