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Need Homework help

Hi ladies, i need some assistance to help DD with her new math homework. I am really bad at Math. I did look online for help, but just need some guidance to make sure she is doing it correct. I am not looking for the answer, just help on how to solve this problem. Then i can help her with the rest.


- 7/8 + -2/6 + 4/8


Thank you so much!!!

 
WifeyandMom71

Asked by WifeyandMom71 at 12:45 PM on Sep. 8, 2013 in Just for Fun

Level 12 (749 Credits)
This question is closed.
Answers (8)
  • Add the 2 negatives together first with a common denom, then decide which is bigger the positive or negative. If the bigger # is negative the answer is negative. If the larger # is positive, then the answer is going to be positive. Subtract the smaller # from larger one and then add the sign. Does that make sense?
    mommy_jules

    Answer by mommy_jules at 1:25 PM on Sep. 8, 2013

  • Start off with least common denominator...
    PartyGalAnne

    Answer by PartyGalAnne at 12:49 PM on Sep. 8, 2013

  • For all 3 fractions, or the first 2 first??
    WifeyandMom71

    Comment by WifeyandMom71 (original poster) at 12:52 PM on Sep. 8, 2013

  • What is the lowest common denominator with 6 and 8 (24)

    7/8 = how many x/24's Since 3X8= 24 take 3x7 (21) so that portion of the equation is 21/24.
    Figure out the other two and add them. Make sure you are at the simplest fraction you can get.
    Dardenella

    Answer by Dardenella at 1:02 PM on Sep. 8, 2013

  • Thank you Darnella. I have the answer as 41/24. My problem is, i dont know if its positive or negative, because 2 of the fractions were negative.
    WifeyandMom71

    Comment by WifeyandMom71 (original poster) at 1:08 PM on Sep. 8, 2013

  • dont two negatives equal a positive?
    feralxat

    Answer by feralxat at 1:16 PM on Sep. 8, 2013

  • That's in multiplication and division. Which number is larger the negative or positive?
    mommy_jules

    Answer by mommy_jules at 1:21 PM on Sep. 8, 2013

  • Answer is -17/24.
    mommy_jules

    Answer by mommy_jules at 1:32 PM on Sep. 8, 2013

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