Simplify. [7m + 3n - 9 + 2m] + [n + 3 + m + 3n - 6] 10m + 8n - 12 10m + 7n - 12 6m + 7n - 12 6a + 7b - 15
[7m + 3n - 9 + 2m] + [n + 3 + m + 3n - 6] = (9m + 3n - 9) + (4n + m - 3) = 9m + m + 3n + 4n - 9 - 3 = 10m + 7n - 12
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Updated 2/16/2016 5:50:38 PM
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[7m + 3n - 9 + 2m] + [n + 3 + m + 3n - 6]
= (9m + 3n - 9) + (4n + m - 3)
= 9m + m + 3n + 4n - 9 - 3
= 10m + 7n - 12
Confirmed by Andrew. [2/16/2016 10:42:55 PM]

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