Equation

From Simple English Wikipedia, the free encyclopedia

For a chemical type of equation, see chemical equation.

An equation is a mathematical or chemical object.

Usually mathematical equations have one equal sign ( = ) with two terms on each side of it. The equal sign says that the terms on each side of it must be equal.

There are two kinds of equations in math:

• The kind of equation which are either true or false; these are also called identities

Example:

• The kind of equation which let you calculate the value of one or several variables because the equation is only true if the variable would have this value.

Example:

The second kind is often used to solve problems in which you have to know the value of variables

Equations are part of math called algebra.