Basically, we need to solve for x. That means that we will need to bring all the terms containing x over to one side and, in short, isolate x. To do this, we should first add 15 to both sides. Doing so gives us

. Next, we subtract 6/5x from both sides, resulting in

. Now, we multiply the reciprocal of -3/5 to 27. Doing so gives us x = -45. Therefore, the answer to your query is
x = -45. Hope this helps and have a nice day!