Elementary AlgebraMenuIntroduction1AlgebraActivity Set 12VariableActivity Set 1Activity Set 23CoefficientActivity Set 1Activity Set 24Algebraic ExpressionCombining like TermsActivity Set 15Subtracting VariablesActivity Set 1Subtract the terms = CheckResetContinue6Adding and Subtracting Unlike TermsActivity Set 1Activity Set 27Multiplying Numbers by CoefficientsActivity Set 1Activity Set 28Combining Variables with ExponentsActivity Set 1Activity Set 29Replacing a Variable with a NumberActivity Set 1Activity Set 210Boss Battle