Decipher the Math Equation - A Brain-Bending Challenge : 3 _ 9 _ 6 _ 3 = -1

This quandary necessitates immediate contemplation and difficulty resolving abilities. You'll be supplied with an equation featuring three lacking operators. Your job is to locate the missing operators and conclude the equation. It's a great approach to evaluate your comprehension of basic math tasks and refine your reasoning capabilities. Be ready to utilize your mind and have a blast!