Writing Algebraic Expressions

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What is an algebraic expression?

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An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 3x + 5 is an algebraic expression.

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What does 'increased by' mean in algebra?

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'Increased by' means to add a certain value to a variable. For example, 'w increased by 5' translates to w + 5.

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What does 'decreased by' mean in algebra?

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'Decreased by' means to subtract a certain value from a variable. For example, 'a number decreased by 12' translates to n - 12.

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How do you express 'twenty times a number' in algebra?

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'Twenty times a number' is expressed as 20x, where x represents the number.

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What is the algebraic expression for '9 plus a number'?

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The expression for '9 plus a number' is 9 + n.

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How do you express 'subtract 5 from a number' in algebra?

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'Subtract 5 from a number' is expressed as n - 5.

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What does the term 'variable' mean in algebra?

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

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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, variables, and operations without an equality sign, while an equation states that two expressions are equal.

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What does '5 times a number' look like in algebra?

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'5 times a number' is expressed as 5n, where n is the number.

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How do you write 'a number divided by 4' in algebra?

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'A number divided by 4' is expressed as n/4.