Ibbutibbu.
  • Ibbutibbu.
PLEEZ HELP ME
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Ibbutibbu.
  • Ibbutibbu.
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Ibbutibbu.
  • Ibbutibbu.
This is a system of inequalitites
Astrophysics
  • Astrophysics
This is a systems of equations problem, so what sort of method do they want you to use

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Ibbutibbu.
  • Ibbutibbu.
Elimination, please
Astrophysics
  • Astrophysics
|dw:1437519449700:dw|
Ibbutibbu.
  • Ibbutibbu.
yes ok
Astrophysics
  • Astrophysics
I think we should get rid of fractions, as they are gross
Astrophysics
  • Astrophysics
first
Astrophysics
  • Astrophysics
What do you think, or do you want to use fractions
Ibbutibbu.
  • Ibbutibbu.
No, fractions are satan's spawn, i agree
Astrophysics
  • Astrophysics
Alright haha, this will take longer than, ok so for both of following equations find a common denominator you may use, \[\frac{ a }{ b } - \frac{ c }{ d } = \frac{ ad-bc }{ bd }\]
Ibbutibbu.
  • Ibbutibbu.
ohhkay
Ibbutibbu.
  • Ibbutibbu.
12 and 6..?
Astrophysics
  • Astrophysics
|dw:1437519673559:dw|
Ibbutibbu.
  • Ibbutibbu.
ok
Astrophysics
  • Astrophysics
Now we can just move the denominators to the right side |dw:1437519727436:dw|
Astrophysics
  • Astrophysics
Now you can do elimination easier
Ibbutibbu.
  • Ibbutibbu.
yes ok
Astrophysics
  • Astrophysics
Go ahead and try now
Ibbutibbu.
  • Ibbutibbu.
\[8x-6y = 24 and -9x+6y=36?\]
Astrophysics
  • Astrophysics
Well for elimination you have to make two of the variables/ coefficients the same right, to eliminate them?
Ibbutibbu.
  • Ibbutibbu.
yeah
Ibbutibbu.
  • Ibbutibbu.
i suppose
Astrophysics
  • Astrophysics
So try again, lets eliminate x first, so what should we multiply the top or bottom by
Ibbutibbu.
  • Ibbutibbu.
i alreadyh multiplied the to one my 2 ant he bottom one by -3
Ibbutibbu.
  • Ibbutibbu.
hmm
Astrophysics
  • Astrophysics
Ok I worded that wrong lol ok let me show u
Ibbutibbu.
  • Ibbutibbu.
k
Astrophysics
  • Astrophysics
|dw:1437520195623:dw| you see
Astrophysics
  • Astrophysics
Now what would you get if you multiply as above, 3* first equation, 4* second equation
Astrophysics
  • Astrophysics
It's sort of like finding the common deno
Ibbutibbu.
  • Ibbutibbu.
k
Astrophysics
  • Astrophysics
k do it
Ibbutibbu.
  • Ibbutibbu.
12x - 9y = 36 and 12x - 8y = -48
Ibbutibbu.
  • Ibbutibbu.
@Astrophysics ??
Astrophysics
  • Astrophysics
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
Astrophysics
  • Astrophysics
|dw:1437521376665:dw| now add the equations

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