Rule 2: Parentheses Puzzlements

In the depths of the Parentheses Puzzlements, lies a world where the rules are as follows:

• Always use 8 pairs of parentheses for every equation.
• Never use more than 5 variables in a single equation.
• Each variable must start with a letter that is not the same letter as the last variable in the equation.

But wait, there's more! You can find more advanced parentheses puzzles at:

• Rule 3: Parentheses Puzzlements 2.0
• Rule 4: The Parentheses Puzzle Paradox

Now, go forth and solve the Parentheses Puzzlements!