Data task 61: A New Zealand Level 2 learner connects multiple ideas in an applied local or national context. Solve x + y = 12 and 2x − y = 18. What is x?

Data task 61: A New Zealand Level 2 learner connects multiple ideas in an applied local or national context. Solve x + y = 12 and 2x − y = 18. What is x?

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