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28-01-2016
Mathematics

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Simplify (2n + 5) - (3n + 7) + (4n - 9).

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Panoyin Panoyin

28-01-2016

(2n + 5) - (3n + 7) + (4n - 9)
(2n - 3n + 4n) + (5 - 7 - 9)
(-n + 4n) + (-2 - 9)
3n - 11

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