Expressions Math Example 4

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Example 4

medium
Write an algebraic expression for: 'triple a number, then subtract 4.'

Solution

  1. 1
    Let nn represent the number.
  2. 2
    'Triple a number' means 3n3n, and 'subtract 4' gives 3n−43n - 4.

Answer

3n−43n - 4
Translating words into algebra: 'triple' means multiply by 3, and 'subtract' means minus. An expression has no equals sign.

About Expressions

A combination of numbers, variables, and operations (like addition, subtraction, multiplication, division) that represents a mathematical quantity. Unlike equations, expressions do not contain an equals sign and cannot be solved — they can only be simplified or evaluated.

Learn more about Expressions →

More Expressions Examples

Example 1 easy

Simplify the expression [formula].

Example 2 medium

Evaluate [formula] when [formula].

Example 3 easy

Simplify [formula].

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