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anonymous

  • one year ago

-3x-6y=21 3x-6y=-9 System Of Elimination - Only Need Steps . Thanks

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  1. anonymous
    • one year ago
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    -5,-1

  2. anonymous
    • one year ago
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    the x's with the x's and the y's with the y's

  3. anonymous
    • one year ago
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    What Are You Asking ?? I Gave You The Answer.

  4. anonymous
    • one year ago
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    And I Did That

  5. anonymous
    • one year ago
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    Lyan Help Please .

  6. LynFran
    • one year ago
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    note: by adding the 2 equations we eliminate the x term...

  7. anonymous
    • one year ago
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    Ok

  8. LynFran
    • one year ago
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    so |dw:1439780091924:dw| please simplify what do we have?

  9. LynFran
    • one year ago
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    whats -6y-6y=? whats 21-9=?

  10. anonymous
    • one year ago
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    -12y=12

  11. LynFran
    • one year ago
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    good now we need the y variable by itself... but right now -12 is being multiplied to y (-12y)... how can we get y alone? do u know?

  12. anonymous
    • one year ago
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    Divide

  13. LynFran
    • one year ago
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    good so|dw:1439780478252:dw|

  14. anonymous
    • one year ago
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    0

  15. LynFran
    • one year ago
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    no if we divide 1/1 we get 1 so any # divided by itself is 1 ..but noted the negative....

  16. anonymous
    • one year ago
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    Whats Being Divided By One Up There

  17. LynFran
    • one year ago
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    |dw:1439780655225:dw|

  18. anonymous
    • one year ago
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    ok

  19. anonymous
    • one year ago
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    12/-12 =0

  20. LynFran
    • one year ago
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    1 divided by 1= 1 2 divided by 2= 1 3 divided by 3 =1 ....

  21. tkhunny
    • one year ago
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    \(\dfrac{12}{12} = 1\) \(\dfrac{Dog}{Dog} = 1\) \(\dfrac{Pittsburgh}{Pittsburgh} = 1\)

  22. anonymous
    • one year ago
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    ^ oooohhh i get it now

  23. LynFran
    • one year ago
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    so whats y=? note the negative sign..

  24. anonymous
    • one year ago
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    -1

  25. LynFran
    • one year ago
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    good now since we have y=-1 we can now find the value of x by? u have any idea? ...

  26. LynFran
    • one year ago
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    how to find that...

  27. anonymous
    • one year ago
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    Add -1 To The Equations

  28. LynFran
    • one year ago
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    no we can substitute the value of y=-1 into the given equations... equation 1 or equation 2 it doesnt matter..u will be given the same result of x..

  29. anonymous
    • one year ago
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    ok

  30. LynFran
    • one year ago
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    so using equation 1 |dw:1439781130011:dw|

  31. LynFran
    • one year ago
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    whats (-6)*(-1)=?

  32. LynFran
    • one year ago
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    whats negative 6 times negative 1 =?

  33. anonymous
    • one year ago
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    -6

  34. LynFran
    • one year ago
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    a negative # time a negative #= a positive #

  35. anonymous
    • one year ago
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    oh yea

  36. LynFran
    • one year ago
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    so ....

  37. anonymous
    • one year ago
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    6

  38. LynFran
    • one year ago
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    |dw:1439781539647:dw| now we need to get x on one side of the equation alone...to do that we can subtract 6 to both sides of the equation...

  39. LynFran
    • one year ago
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    |dw:1439781655064:dw|

  40. anonymous
    • one year ago
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    DIVIDE 3X FROM BOTH SIDES OF THE EQUATION

  41. LynFran
    • one year ago
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    no we subtract 6 from both sides of the equation leaving |dw:1439781779950:dw| whats 21-6=?

  42. anonymous
    • one year ago
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    15

  43. LynFran
    • one year ago
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    ok good can you by using draw' show me the next step |dw:1439781903092:dw|

  44. LynFran
    • one year ago
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    |dw:1439781938626:dw|

  45. anonymous
    • one year ago
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    |dw:1439774773769:dw|

  46. LynFran
    • one year ago
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    no... we can divide by x ... we need x to be alone on one side of the equation ..

  47. LynFran
    • one year ago
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    |dw:1439782133454:dw|

  48. LynFran
    • one year ago
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    |dw:1439782193901:dw|

  49. LynFran
    • one year ago
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    note the negative sign...

  50. anonymous
    • one year ago
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    -5

  51. LynFran
    • one year ago
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    correct

  52. LynFran
    • one year ago
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    now we can do a check to make sure thats our solution by simply substituting the values we just find into the given equation so... |dw:1439782336135:dw|

  53. anonymous
    • one year ago
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    Yay ! Lol

  54. LynFran
    • one year ago
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    ok

  55. LynFran
    • one year ago
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    any question?

  56. anonymous
    • one year ago
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    No Thanks

  57. LynFran
    • one year ago
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    ok welcome

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