Reiny or Steve could you check my Math?

1. (9m+6)+(-5m-6)
my answer: 4m

2. (3r^2+7r+1)+(4r^2-8r-2)
my answer: 7r^2-r-1

3. (6h-1)-(9h+4)
my answer: -3h-3

4. (m^2-m-4)+(m-5)
my answer: m^2-9

5. (4x+4)+(3x+2+1)
my answer: 7x+7

Now this was book work for me so it doesn't have multiple choice, so are my answers correct?

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  1. #3: -3h-5

    The others look ok

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  2. YAY! I only go 1 wrong I'm getting better at this!! xD

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  3. THX Steve for your help~!

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  4. what question did you get wrong

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