Gareth's copy of Gareth's copy of Gareth's copy of Denis's copy of Simultaneous equations (2) in Gareth's workspace

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https://numbas.mathcentre.ac.uk/question/20426/gareth-s-copy-of-gareth-s-copy-of-gareth-s-copy-of-denis-s-copy-of-simultaneous-equations-2/embed/