Learn about functions, graphs, lines, and polynomials. "Algebra" is the math for describing how different things are related. 1. Addition and subtraction. What happens when you add negative numbers? Turns out it's addition! 2. Multiplication and division. An operation you just can't perform... Is there more than one way to evaluate an expression?

Algebra is just like a puzzle where we start with something like "x − 2 = 4" and we want to end up with something like "x = 6". But instead of saying " obviously x=6", use this neat step-by-step approach:

Find a clear explanation of your topic in this index of lessons, or enter your keywords in the Search box. Free algebra help is here!

Coolmath Algebra has hundreds of really easy to follow lessons and examples. Algebra 1, Algebra 2 and Precalculus Algebra.

Whether you're in middle school, high school, college, or university, these free algebra lessons can help you out! How can I use Purplemath's lessons? Purplemath's math lessons can be used in many ways: Read the lesson that relates to what you're about to study in class, so you get to class at least somewhat prepared.

Algebra 1 is the second math course in high school and will guide you through among other things expressions, systems of equations, functions, real numbers, inequalities, exponents, polynomials, radical and rational expressions.

Learn algebra to explore new ways of thinking and build problem-solving skills. Study algebra equations and practice advanced algebra problems with online courses delivered through edX. What is algebra? Algebra is a branch of mathematics that uses letters and symbols to represent numbers in formulas and equations.