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Math

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help me combine like terms. like how do you do it with different signs in the problem.

17 + 4w - 12 - w

  • Math - ,

    17 -12 is a subtraction problem
    4w -w is a subtraction problem.

  • Math - ,

    so lets say i had 4w-8-1w

    i take 4w+1w= 5w

    then i have -8 left and i do

    5w-8

  • Math - ,

    4w-8-1w

    Why did you change the problem from -1w to + 1w?

    4w - 1w = 3w

    4w-8-1w = 3w - 8

  • Math - ,

    it was not negative that was a subtraction sign

  • Math - ,

    Then why didn't you subtract 1w from 4w?

  • Math - ,

    Negative signs and subtraction signs are really the same thing.

    You can write -8 - 6

    negative 8 subtract 6

    which is the same thing as writing

    -8 + -6
    negative eight plus negative 6.

    In both cases, you get a -14 as the answer.

  • Math - ,

    17+4w-12-w
    =17-12+4w-w
    =5+3w
    ...and yes "plus a negative" is exactly the same as minus.

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