Writing Algebraic Expressions

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Translate this phrase into an algebraic expression: Ralph has x coins and Lily has y coins. Assuming Ralph has more coins than Lily, how many more coins does Ralph have than Lily?

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x - y

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Write an expression for the following: a number subtracted from 8.

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8 - n

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Let 'p' represent the number of paper clips in a box. If there are 76 boxes in a case, write an algebraic expression to show the total number of paper clips in the case.

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76p

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Translate this phrase into an algebraic expression: Twelve less than a number.

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n - 12

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What is half of a number c?

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½c

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Define an algebraic expression.

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An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols.

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What is a variable in algebra?

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A variable is a symbol, often a letter, that represents an unknown value.

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What does it mean to evaluate an expression?

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To evaluate an expression means to calculate its value by substituting the variables with numbers.

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What is the difference between an expression and an equation?

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An expression is a combination of numbers and variables without an equality sign, while an equation states that two expressions are equal.

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Translate this phrase into an algebraic expression: The sum of a number n and 5.

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n + 5