ear equationsAlgebraic identitiesNotation & AssumptionsIn this document, lower case roman alphabets will be used to denote variables such as a,b,c,x,y,z,wIn general it is assumed that the GMAT will only deal with real numbers (\(\mathbb{R}\)) or subsets of \(\mathbb{R}\) such as Integers (\(\mathbb{Z}\)), rational numbers (\(\mathbb{Q}\)) etcConcept of variablesA variable is a place holder, which