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9 - 12n 2 + 4n 3 - 7n
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9 - 12n 2 + 4n 3 - 7n

User Mpjdem
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9.6k points

2 Answers

7 votes
-19n+9 is the right answer just group them together it make it easier on you 
User Floriankapaun
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8.6k points
3 votes
Use symbol lab for this it'll save a lot of your time
User DolDurma
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8.5k points
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