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Ibbutibbu.

  • one year ago

PLEEZ HELP ME

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  1. Ibbutibbu.
    • one year ago
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    http://prntscr.com/7vfyam

  2. Ibbutibbu.
    • one year ago
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    This is a system of inequalitites

  3. Astrophysics
    • one year ago
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    This is a systems of equations problem, so what sort of method do they want you to use

  4. Ibbutibbu.
    • one year ago
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    Elimination, please

  5. Astrophysics
    • one year ago
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    |dw:1437519449700:dw|

  6. Ibbutibbu.
    • one year ago
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    yes ok

  7. Astrophysics
    • one year ago
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    I think we should get rid of fractions, as they are gross

  8. Astrophysics
    • one year ago
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    first

  9. Astrophysics
    • one year ago
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    What do you think, or do you want to use fractions

  10. Ibbutibbu.
    • one year ago
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    No, fractions are satan's spawn, i agree

  11. Astrophysics
    • one year ago
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    Alright haha, this will take longer than, ok so for both of following equations find a common denominator you may use, \[\frac{ a }{ b } - \frac{ c }{ d } = \frac{ ad-bc }{ bd }\]

  12. Ibbutibbu.
    • one year ago
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    ohhkay

  13. Ibbutibbu.
    • one year ago
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    12 and 6..?

  14. Astrophysics
    • one year ago
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    |dw:1437519673559:dw|

  15. Ibbutibbu.
    • one year ago
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    ok

  16. Astrophysics
    • one year ago
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    Now we can just move the denominators to the right side |dw:1437519727436:dw|

  17. Astrophysics
    • one year ago
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    Now you can do elimination easier

  18. Ibbutibbu.
    • one year ago
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    yes ok

  19. Astrophysics
    • one year ago
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    Go ahead and try now

  20. Ibbutibbu.
    • one year ago
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    \[8x-6y = 24 and -9x+6y=36?\]

  21. Astrophysics
    • one year ago
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    Well for elimination you have to make two of the variables/ coefficients the same right, to eliminate them?

  22. Ibbutibbu.
    • one year ago
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    yeah

  23. Ibbutibbu.
    • one year ago
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    i suppose

  24. Astrophysics
    • one year ago
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    So try again, lets eliminate x first, so what should we multiply the top or bottom by

  25. Ibbutibbu.
    • one year ago
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    i alreadyh multiplied the to one my 2 ant he bottom one by -3

  26. Ibbutibbu.
    • one year ago
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    hmm

  27. Astrophysics
    • one year ago
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    Ok I worded that wrong lol ok let me show u

  28. Ibbutibbu.
    • one year ago
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    k

  29. Astrophysics
    • one year ago
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    |dw:1437520195623:dw| you see

  30. Astrophysics
    • one year ago
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    Now what would you get if you multiply as above, 3* first equation, 4* second equation

  31. Astrophysics
    • one year ago
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    It's sort of like finding the common deno

  32. Ibbutibbu.
    • one year ago
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    k

  33. Astrophysics
    • one year ago
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    k do it

  34. Ibbutibbu.
    • one year ago
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    12x - 9y = 36 and 12x - 8y = -48

  35. Ibbutibbu.
    • one year ago
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    @Astrophysics ??

  36. Astrophysics
    • one year ago
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    That's right but I forgot to mention you should make one of the numbers negative so we can add them and eliminate so lets just make the second equation multiplied by -4, you can tell how much i use elimination XD

  37. Astrophysics
    • one year ago
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    |dw:1437521376665:dw| now add the equations

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