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math

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i am trying to simplify this equation
4m+9+5m-12=42

  • math -

    combine the m terms on the left. Add 3 to both sides.

  • math -

    4m+9+5m-12=42

    Reorder the terms:
    9 + -12 + 4m + 5m = 42

    Combine like terms: 9 + -12 = -3
    -3 + 4m + 5m = 42

    Combine like terms: 4m + 5m = 9m
    -3 + 9m = 42

    The above was taken from algebrahelp.com.

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