**Algebra is a branch of mathematics that can substitute letters for numbers to find the unknown. It can also be defined as putting real-life variables into equations and then solving them. The word Algebra is derived from Arabic “al-jabr”, which means the reunion of broken parts. In this we will learn about Introduction to Algebra, matchstick patterns, the idea of a variable, examples of variables, and use of variables in standard rules, expressions with variables, using expressions practically, equation, Solutions of an equation.**

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