Solve the system of linear equations by modifying it to REF and to RREF using equivalent...

 

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Solve the system of linear equations by modifying it to REF and to RREF using equivalent elementary operations. Show REF and RREF of the system. Matrices may not be used. Show all your work, do not skip steps. Displaying only the final answer is not enough to get credit. 2x1+2x2-x3 + x4 = 4 4x1+3x2-x3+2x4 8x1 +5x2-3x3+4x4 3x1+3x2-2x3 + 2x4 = 6 = 6 = 12 Solve the system of linear equations by modifying it to REF and to RREF using equivalent elementary operations. Show REF and RREF of the system. Matrices may not be used. Show all your work, do not skip steps. Displaying only the final answer is not enough to get credit. 2x1+2x2-x3 + x4 = 4 4x1+3x2-x3+2x4 8x1 +5x2-3x3+4x4 3x1+3x2-2x3 + 2x4 = 6 = 6 = 12