equation

Definition

A statement in mathematics that shows two expressions are equal, usually with an equals sign (=). It can also mean a problem or situation that needs to be solved or balanced.

Usage & Nuances

Used mostly in math or science. In casual speech, 'equation' can refer to a complex situation needing balance. Collocations: 'solve an equation', 'balance the equation', rarely used in plural as 'equations' for multiple problems.

Example Sentences