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Use Gaussian climination with backward substitution and two-digit rounding arithmetic to solve the following linear systems. Do not reorder the equations. (The exact solution

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Use Gaussian climination with backward substitution and two-digit rounding arithmetic to solve the following linear systems. Do not reorder the equations. (The exact solution to cach system is x = 1.xy--1.5-3.) 4 3. 4x12 + -8 - 2x1 +5x+2x3-3. 31 +25 +45-11.

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