Find the value of k so that x = −1 and y = −1 is solution of the linear equation 9kx + 12ky = 63

Dear Student,
The given equation is 9kx+12ky=63Since, x=-1 and y=-1 are solutions of the given equation, so we have;9k×-1+12k×-1=63-9k-12k=63-21k=63k=63-21=-3Therefore value of k is -3.
Regards

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