Question

find the value of k so that x=-1 and y=-1 is a solution of the linear equation 9kx-12ky=42​

Answer 1

Answer:

k= 14

Step-by-step explanation:

x = -1

y = -1

by substituting the values of x and y in the above equation we get,

9k(-1) - 12k(-1) = 42

-9k + 12k = 42

3k = 42

k = 42/3

k = 14

Answer 2

Answer:

The answer is given in the picture