Which procedure can be used to solve the equation 540=12z, and what is the solution?

To solve 540 = 12z you have to use inverse operation by dividing both sides by 12 to get 45 = z

540 = 12z

the process that would be used most often would be division.

540 = 12z ... divide both sides by 12

540/12 = z

45 = z <==

although, another procedure could also be used ... multiplication ...

540 = 12z ... multiply both sides by 1/12

540 (1/12) = z

540 / 12 = z

45 = z <==