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1. Use the matrix method (together with elementary row transformations) to solve the following: 2x+3y+ z = 1 x+2y+2z = 2 2x+3y+z = 1.

1. Use the matrix method (together with elementary row transformations) to solve the following: 2x+3y+ z = 1 x+2y+2z = 2 2x+3y+z = 1. [4]

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