What context can I use each word in?
Learn when and how to use these words with these examples!
equation
Example
The equation 2x + 3 = 7 can be solved for x. [equation: noun]
Example
We need to balance the chemical equation to understand the reaction. [equation: noun]
expression
Example
The expression 2x + 3 can be simplified by combining like terms. [expression: noun]
Example
The quadratic expression x^2 + 2x + 1 can be factored. [expression: noun]
Good things to know
Which word is more common?
Expression is more commonly used than equation in everyday language. Expression is versatile and covers a wide range of contexts, while equation is more specific to mathematical problem-solving.
What’s the difference in the tone of formality between equation and expression?
Both equation and expression are formal terms used in mathematical contexts. However, expression may be used more casually in everyday language to refer to a mathematical phrase or idea.
