Respuesta :

srahman2
6k - 2z = 12

6(4) - 2(6) = 12.
24 - 12 = 12.

K = 4.
altavistard
6k-2z=12 has two variables (k and z), and thus you can solve for k only in terms of the unknown variable z:

6k = 2z+12, and so  k = (1/3)z + 2 (answer)