8.4.1 Number Puzzles
8.4.2 Keeping the Equation Balanced
8.4.3 Balanced Moves
8.4.4 More Balanced Moves
8.4.5 Solving Any Linear Equations
8.4.6 Strategic Solving
8.4.7 All, Some, or No Solutions
8.4.8 How Many Solutions
8.4.9 When are They the Same?
8.4.10 On or Off the Line?
8.4.11 On Both of the Lines
8.4.12 Systems of Equations
8.4.13 Solving Systems of Equations
8.4.14 Solving More Systems
8.4.15 Writing Systems of Equations
8.4.Vocabulary