1. The problem is to simplify an expression or equation (not specified by the user). 2. To simplify an expression, we combine like terms, apply arithmetic operations, and use algebraic identities. 3. Since no specific expression was given, please provide the exact expression you want simplified. 4. Simplification involves reducing the expression to its simplest form by performing all possible operations. 5. For example, simplifying $2x + 3x$ results in $5x$ by combining like terms. 6. Please provide the expression so I can help you simplify it step-by-step.