Question

x+y=0,2x-y=9 by elimination​

Answer 1

Hope it helps you...

Answer 2

Here Is Your Ans

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2X - Y = 9 ------ 1

X + Y = 0 ---------- 2

Multiply equation 1 by 1 And Equation 2 By 2

We Get ,

2X - Y = 9 ----- 3

2X + 2Y = 0 ------- 4

subtract Equation 3 & 4

=> -3Y = 9

=> Y = -3

Put The Value Of Y In equation 2

=> X + ( - 3 ) = 0

=> X - 3 = 0

=> X = 3

Hence , The Value Of X Is

$\fbox{3}$

And Y is

$\fbox{-3}$

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$<marquee > hope it helps u$