Algebra-1

Question Analysis
This question evaluates the student's ability to recognize and write an equation. The student is asked to provide an example of an equation using a given expression and a specific number.

Key Concept Explanation
An equation is a statement that two expressions are equal and contains an equals sign. An expression, on the other hand, is a combination of numbers, variables, and operations without an equals sign.

Step-by-step Solution
1. Identify the given expression:
2. Use the given number 31 to form an equation:

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