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Words

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Solve this simulataneous equation:

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3$x + y = \\var{a}$ and $x - y = \\simplify[basic]{{b}}$

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$x=$ [[0]] and $y=$ [[1]]

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Add them up xP.

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Number line.

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Video.

", "statement": "

{name} wants to get a total of apples bought.

", "name": "Adding numbers", "type": "question", "contributors": [{"name": "Ricardo Mercado Cordero", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2501/"}]}]}], "contributors": [{"name": "Ricardo Mercado Cordero", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2501/"}]}