i$.$ Prove the validity of the following expression using algebraic manipulation.

Justify your answer.

$x{1}^{\text{'}}x3+x1x2x{3}^{\text{'}}+x{1}^{\text{'}}x2+x12^{\text{'}}=x{2}^{\text{'}}x3+x1x{3}^{\text{'}}+x2x{3}^{\text{'}}+x{1}^{\text{'}}x2x3$

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