The core idea in algebra is using letters to represent relationships between numbers without specifying what those numbers are! Let's explore the basics of communicating in algebraic …

The substitution method is a technique for solving a system of equations. This article reviews the technique with multiple examples and some practice problems for you to try on your own.

Systems of equations overview Introduction to systems of equations Equivalent systems of equations and the elimination method Solving systems of equations with substitution

Learn the basics of algebra—focused on common mathematical relationships, such as linear relationships.

The history of the order of operations used in the United States can be traced back to the 16th and 17th centuries, when mathematicians such as Francois Viete, Rene Descartes, and …

Learn algebra online with Khan Academy, covering equations and inequalities through engaging lessons and exercises to enhance your understanding.

A graphical connection The examples above have shown us the algebraic connection between a function and its inverse, but there is also a graphical connection! Consider function f , given in …

Laws of indices and scientific notation Learn Exponent properties with products Exponent properties with parentheses

If you think about it in terms of real coordinate spaces, both of these are members of R2-- I'll write this down here just so we get used to the notation. So vector a and vector b are both members …

We will now equate two algebraic expressions and think about how it might constrain what value the variables can take on. The algebraic manipulation you learn here really is the heart of …