2x+y=5,2x-y=11 by eliminating method
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- y= 5- 2x
- taking second eqn 2x- y=11
- putting value in second eqn of y
- 2x-5-(-2x)= 11
- 4x-5=11
- 4x= 16
- x=4
- y=5-2*4
- y=5-8
- y=-3
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