[tex]if 3a = (123 \\ 2 \: 1 – 2 \\ – 2 \: 2 – 1)show \: that \: a ^ – 1 = a ^1[/tex]

[tex]if 3a = (123 \\ 2 \: 1 – 2 \\ – 2 \: 2 – 1)show \: that \: a ^ – 1 = a ^1[/tex]

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