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headge

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

  • one year ago
  • one year ago

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  1. headge
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    @kathyforver

    • one year ago
  2. headge
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    @kathyforever

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

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

    • one year ago
  5. headge
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    @Hero

    • one year ago
  6. headge
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    @TuringTest

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

    • one year ago
  8. headge
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    AAAAAAAAAAAAARRRRRRRRRRRR

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

    • one year ago
  10. headge
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    What is 20y/40 - 57y/40?

    • one year ago
  11. Agent47
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    addition is commutative, but subtraction is not.

    • one year ago
  12. cshalvey
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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.

    • one year ago
  13. headge
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    Why is the 57y now over 50?

    • one year ago
  14. MarkRijckenberg
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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

    • one year ago
  15. headge
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    Be arsed douing that!

    • one year ago
  16. headge
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    doing

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

    • one year ago
  18. cshalvey
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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?

    • one year ago
  19. headge
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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?

    • one year ago
  20. cshalvey
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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 = ?

    • one year ago
  21. headge
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    Write is as a single fraction

    • one year ago
  22. headge
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    And I've not been rude to Mark

    • one year ago
  23. cshalvey
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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)

    • one year ago
  24. headge
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    So it could be 37y/40?

    • one year ago
  25. headge
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    -

    • one year ago
  26. headge
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    -37y/40?

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

    • one year ago
  28. headge
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    D:

    • one year ago
  29. headge
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    @MarkRijckenberg

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

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

    • one year ago
  32. headge
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    Alright I'll give you best response

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

    • one year ago
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