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Areesha.1D

  • 2 years ago

1) 2W=3X and W+Z=X+Y what is Y in terms of W? (i caught myself stuck on this when reviewing, when i had gotten it right the first time around :S)

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  1. hartnn
    • 2 years ago
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    you'll be able to find Y in terms of W and Z to get 3X in 2nd equation, you multiply W+Z=X+Y by 3 so that you can replace '3X' by '2W' (from first equation.) what u get ?

  2. Areesha.1D
    • 2 years ago
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    Sure, but where does the z go?

  3. Areesha.1D
    • 2 years ago
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    only in terms of W!!!

  4. hartnn
    • 2 years ago
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    thats what i am saying, you won't be able to find it ONLY in terms of W , it seems impossible to me..... unless more equations are given.....

  5. hartnn
    • 2 years ago
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    do u understand how you will not be able to eliminate Z ??

  6. hartnn
    • 2 years ago
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    i wonder what hba is typing from last 8 minutes...

  7. hba
    • 2 years ago
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    @hartnn If we make more equations it is quite possible to eliminate.

  8. hba
    • 2 years ago
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    I am solving it

  9. hartnn
    • 2 years ago
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    ohh.. go ahead, surprise me ...

  10. hartnn
    • 2 years ago
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    with 2 equations, you''l only be able to eliminate 1 variable....

  11. hba
    • 2 years ago
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    Well i ended up getting their values lol and yeah @hartnn Your'e Right :)

  12. Areesha.1D
    • 2 years ago
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    OMG I got it. I just misread the diagram, here:|dw:1354085940249:dw|

  13. Areesha.1D
    • 2 years ago
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    Thats the number square associated whereas the original one was |dw:1354085985283:dw|

  14. hba
    • 2 years ago
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    X=2W/3 W+Z=2W/3+Y W-2W/3=Y-Z W/3=Y-Z W+Z=X+Y - - - - ----------- W/3-W-Z=X-Z W/3-W=2W/3-Z W/3-W-2W/3=Z W-3W-2W/3=Z -4W/3=Z W+Z=X+Y W-4W/3=2W/3+Y

  15. hba
    • 2 years ago
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    Actually i did it.

  16. Areesha.1D
    • 2 years ago
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    Lol im not going to go and evaluate that xD good for you though!

  17. hba
    • 2 years ago
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    Ahm,Ahm.

  18. hartnn
    • 2 years ago
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    u subtracted incorrectly....

  19. Areesha.1D
    • 2 years ago
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    @hartnn :O

  20. hartnn
    • 2 years ago
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    that was to hba....

  21. hartnn
    • 2 years ago
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    he gets -Z=-Z after subtraction....

  22. hba
    • 2 years ago
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    Where lol ?

  23. hartnn
    • 2 years ago
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    W/3=Y-Z W+Z=X+Y - - - - ----------- W/3-W-Z=-X-Z

  24. hba
    • 2 years ago
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    Oh Haha,If i wouldn't had made the mistake how could i have got the answer :P

  25. hba
    • 2 years ago
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    A system with 4 variables and 2 equations.

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