1. The problem appears to involve understanding the formula with symbols +, =, and -. 2. Typically, in algebra, the symbols +, =, and - represent addition, equality, and subtraction respectively. 3. If the formula is something like $a + b = c - d$, it means the sum of $a$ and $b$ equals the difference between $c$ and $d$. 4. To solve or simplify such an equation, you can isolate variables or combine like terms. 5. For example, if you want to solve for $a$, you can rewrite the equation as: $$a = c - d - b$$ 6. This shows $a$ equals $c$ minus $d$ minus $b$. 7. Without a specific formula or numbers, this is the general interpretation and manipulation of such symbols. 8. Please provide a specific formula or equation for a detailed solution.