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Solve the following equations by matrix ...

Solve the following equations by matrix method :
(i) x+2y+z=7
x+2y+z=7
x+3z=11
x-y+z=4
(ii) x+y-2z=3
4x-2y-3z=11
2x-y+z=0
(iii) 9x+8y-7z=14
3x-2y-z=10
6x-5y+4z=4
(iv) 3x-3y-4y=11
2x+3y+2z=3
-x-2y+3z=-10.
(v) x+y+z=6
x-y+z=2
2x+y-z=1

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