Question: Write each of the following linear systems as a linear combination of the columns of the coefficient matrix: (a) 3x1 + 2x2 + x3 =

Write each of the following linear systems as a linear combination of the columns of the coefficient matrix:
(a) 3x1 + 2x2 + x3 = 4
x1 - x2 + 4x3 = -2
(b) -x1 + x2 = 3
2x1 - x2 = -2
3x1 + x2 =1

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