Solve the pair of linear equation by substitution method
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3x-y=3 (i)
9x-3y=9 (ii)
y=-(9-9x)/3
substitute value of y in equation (i)
3x-(-(9-9x)/3)=3
9x-(-(9-9x)/3)=9 (multiply by 3 on both side)
9x+9+9x=9
18x=0
x=0
substitute value of x in equation (i)
3(0)-y=3
-y=3
y=3
(x,y) = (0,3)
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