Algebra-1

Question Analysis
This question tests the student's ability to recognize the difference between an expression and an equation and to write an equation based on a given statement.

Key Concept Explanation
An expression is a mathematical phrase that can contain numbers, variables, and operations but does not have an equals sign. An equation, however, is a statement that two expressions are equal and contains an equals sign.

Step-by-step Solution
1. Identify the key components of the statement: "three times a number" translates to , "plus five" translates to , and "is equal to twenty" translates to

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