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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How do you represent 'subtracting a number' in algebra?

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To represent 'subtracting a number' in algebra, you use the variable and subtract the value. For example, 'subtract 5 from n' is written as n - 5.

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What does 'increased by' mean in algebraic terms?

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

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How do you express 'less than' in algebra?

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'Less than' indicates subtraction. For example, '13 less than t' is expressed as t - 13.

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What is the algebraic expression for '80 more than b'?

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'80 more than b' is expressed as b + 80.

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What does 'decreased by' mean in algebra?

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'Decreased by' means to subtract a value from a variable. For example, 'x decreased by 4' is written as x - 4.

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How do you express 'a number divided by 5'?

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'A number divided by 5' can be represented as n/5.

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What is the algebraic expression for '7 less than a number'?

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'7 less than a number' is expressed as n - 7.

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How do you represent 'twice a number' in algebra?

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'Twice a number' means to multiply the number by 2. For example, 'twice n' is written as 2n.

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What does 'the sum of' indicate in algebra?

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'The sum of' indicates addition. For example, 'the sum of x and 3' is expressed as x + 3.