This eBook introduces the subject of algebra to the student encompassing, inverse operators, equations, the order of precedence, algebraic conventions, BODMAS, expressions, formulae, factorising, rearranging and solving linear, quadratic and simultaneous equations as well as inequalities.This eBook is part of our range of Key Stage 4 (KS4) maths eBooks that are fully aligned with the UK Governments national curriculum.Our Key Stage 4 (KS4) maths eBooks comprise three principle sections. These are, notably:•Number and Algebra•Geometry and Measures•StatisticsIn addition, there exists a Publications Guide.Our maths eBooks are produced such as that as well as a Publications Guide, and three principle publications corresponding to the principle sections (Number and Algebra, Geometry and Measures and Statistics) there are individual modules produced within each principle section which are published as eBooks.Algebra is a module within the Number and Algebra principle section our Key Stage 4 (KS4) publications.