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algebra

posted by on .

Here is the problem I am working on and what I did so far:
4+m-3m
First I did this:
4+(m-3m)
Then I did this:
4+(-2m)
I thought my answer should be:
4-2m
The answer key says the answer should be:
-2m+4
What did I do wrong?

  • algebra - ,

    you did nothing wrong, your answer is correct,
    yours is just in a different order


    (isn't
    3+4 = 4+3 or
    +5 - 9 = -9 + 5 ?)

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