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Collect Like Terms $- 9 + 6 m - 12 n + 6 m + 7 n + 2$

Question 108

Multiple Choice

Collect like terms.
- $- 9 + 6 m - 12 n + 6 m + 7 n + 2$

A) $- 3 m - 6 n + 9$
B) $12 m - 5 n - 7$
C) $- 6 m + 13 n - 7$
D) $- 5 m + 12 n + 7$

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