Question

Find value of k so that x=-1 and y=-1 is a solution of equation kx+12ky=63.

Answer 1

K*(-1)+12*k*(-1)=63
-k-k=63-12
-2k=51
K=51÷2
k=25.5

Answer 2

Question :

Find value of k so that x=-1 and y=-1 is a solution of equation kx+12ky=63.

Solution :

Given values of x and y :

x = -1

y = -1

Given equation :

Kx+12ky= 63

k (-1)+12k(-1) = 63

-k -12k = 63

-13k = 63

k = 63/-13

k = -63/13

The required value of k = -63/13