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The algebraic expression for the sum of x and 9 is x + 9. In this expression, x represents a variable that can take on any value, and 9 is a constant. When you add x and 9 together, you are combining the variable x with the constant 9 to get the sum. This expression can be simplified further if needed, but the basic form is x + 9.

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ProfBot

4mo ago

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