Question

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

Answer 1

what do u wanna find

Answer 2

do it thru elimination!!

Answer 3

what is elimination

Answer 4

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

Answer 5

HOW >??? i m confused

Answer 6

0+y=2
y=2

Answer 7

i am also confused

Answer 8

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

Answer 9

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

Answer 10

how did i do it

Answer 11

didnt get you guys

Answer 12

Try to study it ... from videos ..

Answer 13

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

Answer 14

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

Answer 15

@virtus : short term memory loss :D

Answer 16

yeah right

Answer 17

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

Answer 18

ghajni

Answer 19

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

Answer 20

:P

Answer 21

can't you add equatins @Hashir ?

Answer 22

what is that

Answer 23

@ujjwal : what equation ???

Answer 24

equation ... i dont know what is an equation