ABSTRACT
This chapter distinguishes between an algebraic expression and an algebraic equation and maintains the equality of a given equation whilst applying arithmetic operations. It solves linear equations in one unknown including those involving brackets and fractions and forms and solves linear equations involved with practical situations. An identity is a relationship that is true for all values of the unknown, whereas an equation is only true for particular values of the unknown. Simple linear equations (or equations of the first degree) are those in which an unknown quantity is raised only to the power 1. Any arithmetic operation may be applied to an equation as long as the equality of the equation is maintained.
