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5. For what value of k the following pair of linearequations has unique solution?7x + 8y = k9x - 4y = 12​

Answer»

SIMPLE yr

\frac{a1}{a2} not \: equal   \frac{b1}{b2} for uniques sol

that's why k is not dependent on this .

for any value of k .SYSTEM of equations have UNIQUE sol



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