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Solution


Q.

If the lines 5x+ky=7, 5x-2y=3 and 3x-y=2 are concurrent, then the value of k is ______.

Ans.

(2)

Solving two equations x=1, y=1

Put in 5x+ky=7, we get 5+k=7⇒ k=7-5=2