x-2y=-1 , 2x-y=7 solve the equation by substitution method
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X=1+2y
And 2x-y=7
Therefore 2(1+2y)-y=7
2+4y-y=7
3y= 5
Y=5/3
X= 1+10/3 = 13/3
And 2x-y=7
Therefore 2(1+2y)-y=7
2+4y-y=7
3y= 5
Y=5/3
X= 1+10/3 = 13/3
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