Algebraic Expressions and Equations

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What is a variable in an algebraic expression?

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A symbol, often a letter, that represents an unknown value in an equation or expression.

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Write an algebraic expression for 'the difference between a number and 3'.

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What is an algebraic expression?

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A mathematical phrase that can include numbers, variables, and operation symbols.

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What does it mean to simplify an expression?

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To combine like terms and reduce the expression to its simplest form.

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The coefficient is 3, which is the number multiplying the variable x.

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What is the total cost expression for a subscription that costs $20 per month with a $50 sign-up fee for m months?

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What is the ratio of 2 to 3 expressed as a fraction?

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