(i) For which values of \( a \) and \( b \) does the following pair of linear equations have an ...
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0(i) For which values of \( a \) and \( b \) does the following pair of linear equations have an infinite number of solutions?
\[
\begin{array}{l}
2 x+3 y=7 \\
(a-b) x+(a+b) y=3 a+b-2
\end{array}
\]
(ii) For which value of \( k \) will the following pair of linear equations have no solution?
\[
\begin{array}{l}
3 x+y=1 \\
(2 k-1) x+(k-1) y=2 k+1
\end{array}
\]
\( \mathbf{P} \)
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