Question: Solve the simultaneous equations by matrix inversion 2x 1 + x 2 = 4, x 1 + 2x 2 + x 3 = 7, x

Solve the simultaneous equations by matrix inversion
2x1 + x2 = 4,
x1 + 2x2 + x3 = 7,
x2 + 2x3 = 8.

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