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guys ........ x+y=2 and x-y=-2 how can i solve it

Mathematics
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  • hba
what do u wanna find
do it thru elimination!!
what is elimination

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Other answers:

  • hba
x+y=2 x-y=-2 2x=0 x=0
HOW >??? i m confused
  • hba
0+y=2 y=2
  • hba
i am also confused
add both the equations...y will be eliminated!!
x+y=2-------------1) x-y=-2 ------------2) solving for x in 1st equation : x+y=2 x=2-y now put this value in 2nd equation x-y=-2 2-y-y=-2 2-2y=-2 -2y=-4 y=\(\frac{-4}{-2}\) y=2 x = 2-y = 2-2=0
  • hba
how did i do it
didnt get you guys
Try to study it ... from videos ..
@hba and Hashir i am rather amazed at how fast memory lost and mental retardation can occur
what is to understnd...add both the equations...2 x = 0
@virtus : short term memory loss :D
  • hba
yeah right
You can use a metrics if you don't understand elimination or substitution
  • hba
ghajni
oh whats a matrix ... is it matrix .... the movie ... i love that movie
:P
can't you add equatins @Hashir ?
  • hba
what is that
@ujjwal : what equation ???
equation ... i dont know what is an equation
  • hba
|dw:1342265541343:dw|
cmon guys take it easy on a 7 year old -
2x+2x=5x i guess ???
  • hba
yeah brilliant
  • hba
u are right
Oh Oh Oh I have the anwser..... In the great words of Yoda, who has all the answers. \[ \pi, \sqrt{-1} \hspace{3mm} \sqrt{64}\] Delicious it was. Get it HA
  • hba
its not a pizza that it would be delicious
Set up the augmented matrix
|dw:1342267194746:dw|
you should add both equations as one y is wth postv sign nd othr is wth negtv sign so they will cancel each other nd both x have postv sign so the will be addes nd their sum will 2x nd right side of equation again 2 is wth pstv nd ngtv sign so they will cancl each othr nd x will b equal to 0
|dw:1342278153762:dw|
i can help you....!!!!!
do you know about matrix?
|dw:1342343085258:dw|

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