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Help with math question?

Discussion in 'Questions and Answers' started by King Felix, Apr 7, 2010.

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  1. King Felix

    King Felix Season Ticket Holder Club Member

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    simplify by removing brackets and parenthesis

    3[6-(y+1)]


    the teacher didnt explain this...fvck math
     
  2. azfinfanmang

    azfinfanmang Premium Member Luxury Box

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    HINT: Work inside out. :up:
     
  3. King Felix

    King Felix Season Ticket Holder Club Member

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    lol i know the order of operations but that - sign is messing me up

    edit:nvm i was trying to the distribute 6 thats why the minus sign was messing me up.
     
  4. azfinfanmang

    azfinfanmang Premium Member Luxury Box

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    You mean the minus sign? :confused2:
     
  5. King Felix

    King Felix Season Ticket Holder Club Member

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    yeah
     
  6. azfinfanmang

    azfinfanmang Premium Member Luxury Box

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    Well, I am only 14, but to me it means subtract. :wink2:
     
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  7. King Felix

    King Felix Season Ticket Holder Club Member

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    the back of the book says the answer is 15-3y..i see how they get the 3y, but 6+1=7 and multiplying that by 3 is 21.....
     
  8. unluckyluciano

    unluckyluciano For My Hero JetsSuck

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    3[6-(y+1)]
    = 3[6-y-1]
    =3[5-y]
    =15-3y
     
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  9. King Felix

    King Felix Season Ticket Holder Club Member

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    thanks...so when you drop the parenthesis or brackets you change the sign to the opposite??
     
  10. unluckyluciano

    unluckyluciano For My Hero JetsSuck

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    no. let me put an explanation let me know if you understand it or not:

    3[6-(y+1)] -- first since its a -(y+1) that means there exists a -1 in front of the parenthesis so it is actually like so: 3[6-1(y+1)] so we distribute the -1 and get below:
    = 3[6-y-1] -- now we have two terms that we can combine the 6 and the -1 .We then do the subtraction and get below:
    =3[5-y] -- next just distribute the 3 to the brackets so we obtain: (3*5) - (3*y) and we get your answer below:
    =15-3y
     
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  11. King Felix

    King Felix Season Ticket Holder Club Member

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    okay..yeah i got it, distributing the -1 made the sign change cuz -1x1=-1...i just had to do the same thing on the next problem and i got it right....thanks brah
     
  12. unluckyluciano

    unluckyluciano For My Hero JetsSuck

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    wheres my check biotch.
     
  13. King Felix

    King Felix Season Ticket Holder Club Member

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    send me your social security number and in return ill send you a check
     
  14. Stitches

    Stitches ThePhin's Biggest Killjoy Luxury Box

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    3[6-(y+1)]

    Simplified without brackets or parenthesis:

    36-y+1

    :shifty:
     
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