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Hi! Please help! Combine like terms.

Hi! Please help! Combine like terms.-example-1

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(4m3-2m2+m-9)-(9m3-3m2-4m+7)

4m3-2m2+m-9-9m3+3m2+4m-7

4m3-9m3-2m2+3m2+m+4m-9-7

-5m3+m2+5m-16


The simplified version of that is -5m3+m2+5m-16