1. Introduction to Algebra - Math is Fun

    https://www.mathsisfun.com/algebra/introduction.html

    Learn the basics of algebra with puzzles, examples and exercises. Find out how to use letters, balance equations and cancel out terms.

  2. Algebra I - Khan Academy

    https://www.khanacademy.org/math/algebra

    The Algebra 1 course, often taught in the 9th grade, covers Linear equations, inequalities, functions, and graphs; Systems of equations and inequalities; Extension of the concept of a function; Exponential models; and Quadratic equations, functions, and graphs.

  3. Algebra (all content) - Khan Academy

    https://www.khanacademy.org/math/algebra-home

    Khan Academy offers free educational resources in various subjects, but there is an issue loading the page. Please try again later.

  4. Algebra | History, Definition, & Facts | Britannica

    https://www.britannica.com/science/algebra

    Algebra is the branch of mathematics in which abstract symbols, rather than numbers, are manipulated or operated with arithmetic. For example, x + y = z or b - 2 = 5 are algebraic equations, but 2 + 3 = 5 and 73 * 46 = 3,358 are not.

  5. Algebra (Definition, Basics, Branches, Facts, Examples) | What is Algebra?

    https://byjus.com/maths/algebra/

    Learn what algebra is, how it is used in maths and real life, and the different branches of algebra. Explore algebra topics, formulas, examples, video lessons, and worksheets for classes 6 to 11.