# If x = 1 and y = -1 is a solution of the equation 12x – ky = (2k + 1).Find the value of k.

Putting the values of x and y inn the equation, we get,

12 × 1 – k × (-1) = (2k + 1)

12 + k = 2k + 1

2k – k = 12 – 1

k = 11

Hence, the value of k is 11.

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