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Homework help...

Discussion in 'Off Topic' started by Maximus, Dec 18, 2012.

  1. Maximus

    Maximus BANNED Staff Member

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    I can't remember(nor do i want to) how to add/subtract fractions and mixed numbers. One of you nice kids work these out for some old school rep. Thanks.

    (-4/5) - 7/8 =

    (-1/3) + 3/8 =

    1/3 - (-5/3) =

    9/5 + (-4/3) =

    (-10/7) + 1/6 =


    Show your work... :chuckles:
     
  2. Lee

    Lee Established Since 2005

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    have to make them all the same common denominate first, then do the simple math.
     
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  3. Lee

    Lee Established Since 2005

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    (-32/40) - (35/40) = -67/40 or -1 27/40
     
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  4. Lee

    Lee Established Since 2005

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    (-8/24) + 9/24 = 1/24
     
  5. Lee

    Lee Established Since 2005

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    1/3 + 5/3 = 6/3 or 2
     
  6. Lee

    Lee Established Since 2005

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    27/15 - 20/15 = 7/15
     
  7. MoFlo

    MoFlo Administrator Staff Member

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    Have to find the Least Common Denominator:

    (-4/5) - 7/8 turns into (-32/40) - 35/40 = -67/40 = -1 27/40

    (-1/3) + 3/8 turns into (-8/24) + 9/24 = 1/24

    1/3 - (-5/3) = 1/3 + 5/3 = 6/3 = 2

    9/5 + (-4/3) turns into 27/15 + (-20/15) = 7/15

    (-10/7) + 1/6 turns into (-60/42) + 7/42 = - 53/42 = -1 11/42
     
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    Last edited: Dec 18, 2012
  8. Lee

    Lee Established Since 2005

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    -60/42 + 7/42 = -53/42 or -1 11/42
     
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  9. Lord Mar

    Lord Mar Master

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    Rather simple once you get the hang of it to do it in your head.

    (-1/3) + 3/8 = x

    common denomenator between 3 and 8 is 24

    -1 x 8 = ? (you're multiplying the other base in 3/8 (the #8) by the top # in -1/3 (I forget the name of that).

    3 x 3 = ?

    -8/24 + 9/24 = x

    x = 1/24
     
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  10. Lee

    Lee Established Since 2005

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    No thanks needed, just some free nachos next time you are in phoenix area.
     
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  11. ChicagoCavFan

    ChicagoCavFan Moderator

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    Big Max having trouble helpin Little Max???
     
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  12. Lee

    Lee Established Since 2005

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    The good news is Big Max has the money to pay for a tutor when little max starts calculus.

    You know Big Max is a job creator. :chuckles:
     
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  13. Maximus

    Maximus BANNED Staff Member

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    He stayed home sick. Doesn't have math book for me to re-teach myself. Math sheets due tomorrow...last day before break. :chuckles:


    You guys are the best!!!! Thanks!
     
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  14. Lee

    Lee Established Since 2005

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    By the looks of your math memory and what your son is learning, you are about 2 or 3 years away from not having a prayer to reteach yourself, ie your son is on his own or needs a tutor. Math is my thing, so this was easy, but my third grade daughter was shocked when she figured out she is already a better speller than I am.
     
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  15. pr26

    pr26 NBA Starter

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    I love this forum. I've spent time on a variety of different forums in the past, but this one has by far the best mix of information, sense of community, designated curmudgeons, and lulz.
     
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  16. MoFlo

    MoFlo Administrator Staff Member

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    Ditto, for future references.
     
  17. Lord Mar

    Lord Mar Master

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    I just realized there is a definite visual component to math, more-so than before. - Rather, maybe, the visual component is more of a help to some than others.

    I loved math until it started getting too complex for me (around college) and I become disinterested in it.

    This thread has also made me realize that I'm able to remember things I thought I'd never use in my life lol.
     
  18. Chardon

    Chardon Hall of Farmer

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  19. KI4MVP

    KI4MVP formerly LJ4MVP

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    that doesn't show him how to do it.

    Max, I hope you showed him how to do it and let him calculate the actual answers.
     
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  20. Bill Walton.

    Bill Walton. Luke, I am your Father

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    For what you did to this forum. I hope your son fails....



    Tell Minimus if he needs some math help and a new pot connect hit up Uncle Bill.
     
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