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headge

  • 3 years ago

When you get a fraction like this: 20y/40 - 57y/40, can I swap it to 57y/40 - 20y/40?

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  1. headge
    • 3 years ago
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    @kathyforver

  2. headge
    • 3 years ago
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    @kathyforever

  3. headge
    • 3 years ago
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    Yes no, maybe, I don't know

  4. kathyforever
    • 3 years ago
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    im not completely sure. i think so but i may be wrong

  5. headge
    • 3 years ago
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    @Hero

  6. headge
    • 3 years ago
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    @TuringTest

  7. Agent47
    • 3 years ago
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    One does not simply swap the fractions whenever he or she feels like it!

  8. headge
    • 3 years ago
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    AAAAAAAAAAAAARRRRRRRRRRRR

  9. Agent47
    • 3 years ago
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    you could swap it to: -57y/50+20y/40 though

  10. headge
    • 3 years ago
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    What is 20y/40 - 57y/40?

  11. Agent47
    • 3 years ago
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    addition is commutative, but subtraction is not.

  12. cshalvey
    • 3 years ago
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    @headge - Do you understand negative numbers? So, in this example it's okay for the answer to be less than zero, or rewrite it as @Agent47 has done.

  13. headge
    • 3 years ago
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    Why is the 57y now over 50?

  14. MarkRijckenberg
    • 3 years ago
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    To answer your question, you need to simplify the issue. You need to put y/40 outside the brackets and the remaining numbers inside the brackets. Then you will see that 20-57 is definitely not the same value as 57-20

  15. headge
    • 3 years ago
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    Be arsed douing that!

  16. headge
    • 3 years ago
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    doing

  17. headge
    • 3 years ago
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    Mark you look like billy corgan. So I will write the question out in full

  18. cshalvey
    • 3 years ago
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    Now *that's* an excellent example there @MarkRijckenberg @headge - I'd be careful about how I interact with the people who are helping you, ok? Now, what part of this problem don't you understand? Did Mark's example help?

  19. headge
    • 3 years ago
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    Y/2 - 5y/8 + 4y/5 = 20y/40 - 25y/40 + 32y/40 = 20y/40 - 57y/40 Then I got stuck. What do you mean? What have I said that is rude?

  20. cshalvey
    • 3 years ago
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    Hmm, so now I'm confused. Are you supposed to solve for y in this problem? In terms of your original question, are you able to do that part? 20 - 57 = ?

  21. headge
    • 3 years ago
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    Write is as a single fraction

  22. headge
    • 3 years ago
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    And I've not been rude to Mark

  23. cshalvey
    • 3 years ago
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    Ok, understood. So, are you able to subtract 20y from 57y? An easier way to think of it is by adding a negative, as @Agent47 did. So, -57 + 20 = ? (this answer will be a negative number FYI)

  24. headge
    • 3 years ago
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    So it could be 37y/40?

  25. headge
    • 3 years ago
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    -

  26. headge
    • 3 years ago
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    -37y/40?

  27. headge
    • 3 years ago
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    There she goes, there she goes again. She calls my name!

  28. headge
    • 3 years ago
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    D:

  29. headge
    • 3 years ago
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    @MarkRijckenberg

  30. cshalvey
    • 3 years ago
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    Hehe, sorry, connection issues. But yes, you got it! It's -37y/40 :)

  31. headge
    • 3 years ago
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    I didn't know you were able to get a -y thing!

  32. headge
    • 3 years ago
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    Alright I'll give you best response

  33. MarkRijckenberg
    • 3 years ago
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    I disagree: Y/2 - 5y/8 + 4y/5 = 20y/40 - 25y/40 + 32y/40 = -5y/40 + 32y/40 = 27y/40

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