Page 2: Special Cases in Linear Equations

This page explores two important special cases in linear equations: identities and contradictions, demonstrating how equations don't always have unique solutions.

Definition: An identity is an equation that is true for all values of the variable, while a contradiction has no solution.

Example:

• Identity case: 2x + 6 = 3(x + 2) reduces to 2x + 6 = 2x + 6
• Contradiction case: 5x - 3 = 4(x + 2) + x leads to -3 = 8, showing no solution exists

Highlight: Understanding these special cases is crucial for comprehensive equation solving skills.

The page reinforces the importance of solution verification through detailed checking steps, showing how substitution confirms or disproves potential solutions.

Page 1: Fundamental Steps in Linear Equation Solving

This page outlines the systematic approach to solving linear equations in one variable. The methodology emphasizes both solution finding and verification processes.

Definition: A linear equation in one variable is an equation where the variable appears only to the first power.

Highlight: The four-step process ensures accurate and verifiable solutions.

The page presents a structured method through four essential steps:

1. Simplification of equation sides
2. Variable term collection using addition/subtraction
3. Coefficient reduction to 1 using multiplication/division
4. Solution verification through substitution

Example: Two practical examples demonstrate the process:

• X + 5 = -2 solving to X = -7
• Equation involving Y solving to Y = -10

Vocabulary: Coefficient - the numerical factor of a variable term