# x - y + 2z + w = +4 -2x + 3y = -4 x +...

x - y + 2z + w = +4

-2x + 3y = -4

x + y + z - 4w = +3

Rewrite linear system as matrix  ##### Add Answer of: x - y + 2z + w = +4 -2x + 3y = -4 x +...
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