Equation

From Simple English Wikipedia, the free encyclopedia

A mathematical equation is an expression containing two mathematical objects connected by an equals sign (=) .[1][2][3][4] The equals sign says that both sides are exactly equal, or of the same value. An equation can be as simple as , or as complex as or harder.

There are two kinds of mathematical equations:

  • The kind of equation that is either true or false; these are also called identities. For example:
  • The kind of equation that is only true for certain values of the variable(s). The equation is only true if the variable(s) have that value. For example:

The second kind is often used to solve problems in which finding the value of some variables is involved. For example, if

,

The second kind of equation is used in algebra. For example, to solve the equation for , one would follow an algebraic rule to find that .

Types of equations[change | change source]

Equations can be classified by the types of operations and quantities involved. For example:

Related pages[change | change source]

References[change | change source]

  1. "Compendium of Mathematical Symbols". Math Vault. 2020-03-01. Retrieved 2020-09-01.
  2. "Equations and Formulas". www.mathisfun.com. Retrieved 2020-09-01.
  3. "A statement of equality between two expressions. Equations are of two types, identities and conditional equations (or usually simply "equations")". « Equation », in Mathematics Dictionary, Glenn James et Robert C. James (éd.), Van Nostrand, 1968, 3 ed. 1st ed. 1948, p. 131.
  4. Une équation est une égalité entre deux expressions mathématiques, donc une formule de la forme A = B, où les deux membres A et B de l'équation sont des expressions où figurent une ou plusieurs variables, représentées par des lettres. ÉQUATION, mathématique - Encyclopædia Universalis