Answer:
Step-by-step explanation:
I will have to assume that you meant 30kx-6kx = 0. Please note that 30kx-6kx is not an equation and thus can't be solved for x.
You could, however, factor 30kx-6kx by taking x out of both terms:
30kx-6kx = x(30k - 6k). But this is not a "solution."