Question 1102858: without calculating, solve for z and explain why
3x + 2y + 4z -7w = 4
2x -5y +7z + 2w = 7
4x +2y -3z -3w = -3
x -11y +2z +9w = 2 Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! without calculating, solve for z and explain why
3x + 2y + 4z -7w = 4
2x -5y +7z + 2w = 7
4x +2y -3z -3w = -3
x -11y +2z +9w = 2
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The coefficient of z equals the right side.
--> z = 1
x = y = w = 0
