In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation or an algebraic expression. In simple words, a variable is a quantity that can be changed and …

Illustrated definition of Variable: A symbol for a value we don't know yet. It is usually a letter like x or y. Example: in x + 2 = 6, x is the variable....

One of the variables, N, the number of particles, is a positive integer (and therefore a discrete variable), while the other three, P, V and T, for pressure, volume and temperature, are …

Jul 23, 2025 · A variable is like a placeholder or a box that can hold different values. In math, it's often represented by a letter, like x or y. The value of a variable can change depending on the …

What is a variable? Variables in math are symbols, often letters, that represent different values in various situations. They help us understand and solve problems with changing values.

A variable in maths is a symbol, usually a letter such as x, y, or n, that represents an unknown or changeable value. Variables are found in many areas of mathematics, including algebra, …

Learn what a variable is in math with simple explanations. Understand its definition, types, and the difference between dependent & independent variables.

In algebra, a variable is usually a letter or other symbol that stands for a number or quantity that may vary. Variables can also be used to represent functions as well as quantities in other …

In mathematics, variables are symbols that represent unknown values.

What is a variable? A variable is a box, and it exists to contain a value. Sometimes the value is already inside the box, and you have to figure out what that value is. Other times, the box is …