find the value of k for which the pair of equations 3x+y=1 and (2k-1)x+(k-1)y=2k+1 has no solution
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3x+y-1=0
(2k-1)x+(k-1)y-2k-1=0
a1/a2=b1/b
now
3/(2k-1)=1/k-1
3k-3=2k-1
3k-2k=-1+3
k=2
(2k-1)x+(k-1)y-2k-1=0
a1/a2=b1/b
now
3/(2k-1)=1/k-1
3k-3=2k-1
3k-2k=-1+3
k=2
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