## Hashir 3 years ago guys ........ x+y=2 and x-y=-2 how can i solve it

1. hba

what do u wanna find

2. harsimran

do it thru elimination!!

3. Hashir

what is elimination

4. hba

x+y=2 x-y=-2 2x=0 x=0

5. Hashir

HOW >??? i m confused

6. hba

0+y=2 y=2

7. hba

i am also confused

8. harsimran

add both the equations...y will be eliminated!!

9. mathslover

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

10. hba

how did i do it

11. Hashir

didnt get you guys

12. mathslover

Try to study it ... from videos ..

13. virtus

@hba and Hashir i am rather amazed at how fast memory lost and mental retardation can occur

14. harsimran

what is to understnd...add both the equations...2 x = 0

15. Hashir

@virtus : short term memory loss :D

16. hba

yeah right

17. MathDoodler

You can use a metrics if you don't understand elimination or substitution

18. hba

ghajni

19. Hashir

oh whats a matrix ... is it matrix .... the movie ... i love that movie

20. Hashir

:P

21. ujjwal

can't you add equatins @Hashir ?

22. hba

what is that

23. Hashir

@ujjwal : what equation ???

24. Hashir

equation ... i dont know what is an equation

25. hba

|dw:1342265541343:dw|

26. Hashir

cmon guys take it easy on a 7 year old -

27. Hashir

2x+2x=5x i guess ???

28. hba

yeah brilliant

29. hba

u are right

30. MathDoodler

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

31. hba

its not a pizza that it would be delicious

32. Romero

Set up the augmented matrix

33. angela210793

|dw:1342267194746:dw|

34. arbab11

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

35. Hashir

|dw:1342278153762:dw|

36. Hashir

@angela210793