2x-y=3 and x-y-3=0 by alemation method
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2x - y = 3
X - y = 3
2x - y = 3
2(X - y = 3 )
2x - y = 3 1st equation
2x - 2y = 6 2nd equation
subtract 2nd equation from 1st equation
2x - y = 3
-2x + 2y = -6
3y = -3
y = -3 / 3
y = -1
put the value of y in 1st equation
2x - y = 3
2x - (-1) = 3
2x + 1 = 3
2x = 3 - 1
2x = 2
X = 2/ 2
X = 1
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