Summoning Mythical Beasts All Depends on Solving Equations? Algebra Is Also a Skill

I traveled to the world of cultivation and discovered that solving linear equations of one variable was actually the secret technique of summoning divine beasts. As long as the value of an X is calculated, the corresponding battle pet can be summoned from the void. The Supreme Elder in the Colosseum solved "X minus one equals zero", and an old hen appeared out of thin air, instantly shocking the monks in the stands. I fell into deep thought, is this the legendary beast-controlling deity?