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Help 6th grade math please help

Help 6th grade math please help-example-1
User Hvertous
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2 Answers

7 votes
The answer would be 12n. You have to put like terms together. When you add 9n+3n, you get 12n. Then you would do 2+ (-2) which cancels out and becomes 0. That leaves you with 12n. :)
User Lethjakman
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5 votes

Answer:

12n

Explanation:

User Sashika
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