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Exercise 2.6 (Solutions)

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2 (iv)\\ 13y = 14\\ y = 14/13\\ \hbox{put value of y in (i)}\\ 2x+3(14/13) =4\\ \hbox{mult... \ 2x+4y = -2\\ -2x+7y = 2\\ 11y =0\\ y=0\\ \hbox{put value of y in (i)}\\ x+2(0) = -1\\ x = -1\\ *