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anonymous

  • one year ago

9a-b-2a-10b A)-7a+11b B)11a+9b C)-11a-9b D)7a-11b Help please

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  1. texaschic101
    • one year ago
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    All you have to do here is combine like terms. Do you know what like terms are ?

  2. anonymous
    • one year ago
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    no

  3. texaschic101
    • one year ago
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    Like terms are terms that have EXACTLY the same letters. Example : 2x and 3x are like terms and can be added to equal 5x 3x and 4y are not like terms and you cannot do anything with them. So lets look at our problem... 9a - b - 2a - 10b can you find the like terms ?

  4. anonymous
    • one year ago
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    9a-2a=7a?

  5. texaschic101
    • one year ago
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    correct.....9a - 2a = 7a are there any more like terms ?

  6. anonymous
    • one year ago
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    I don't think so

  7. texaschic101
    • one year ago
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    what about -b - 10b ? Keeping in mind that -b is the same as -1b.

  8. anonymous
    • one year ago
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    so D?

  9. texaschic101
    • one year ago
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    yes...because.. 9a - 2a = 7a -1b - 10b = -11b put it all together and you get : 7a - 11b

  10. anonymous
    • one year ago
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    thank you so much

  11. texaschic101
    • one year ago
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    anytime :)

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