Algebra is a branch of mathematics that uses letters like x, y, and z, to represent numbers in equations and formulas. These letters signify quantities without fixed values known as variables, unlike arithmetic that is based on known number values. Algebra also uses symbols like, +, -, and ( ) and have the same meaning as other branch of math.
6x, 9x + 6, y - 5x, x2+ 5 + 1, (x+ 2) (y+2), etc.
In short, algebra is about finding the unknown or using the variables to solve equations. It is designed to help solve problems quicker and easier.
Here is a listing of all the algebra lessons available in this section.