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\left. \begin{array} { l } { 2 x + 3 y = 7 } \\ { ( k - 1 ) x + ( k + 2 ) y = 3 k } \end{array} \right. |
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Answer» comparing the equations- k -1 = 2=> k = 3 k + 2= 3 k = 1 3k = 7=> k = 7/3 |
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