Lesson 1C: Algebra Introduction

Learn to solve for variables, simplify expressions, and understand basic equations through visual examples.

Algebraic Foundations

Watch this interactive video to see step-by-step examples of solving linear equations and simplifying expressions.

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Understanding Algebra

Basic Principles

Algebra uses variables (usually x or y) to represent unknown numbers. The goal is to isolate variables to find their values.

  • Use inverse operations to isolate variables
  • 3x + 4 = 10 becomes x = 2 after steps
  • Check solutions by substituting back into original equation

Simplification Rules

Combine like terms and use distributive property to make expressions simpler.

Example:

3(x + 2) = 3x + 6

2x + 4x = 6x

Try Practice Problems

Apply What You've Learned

Problem 1

Solve for x:

2x + 3 = 11

Problem 2

Simplify:

3(2x - 4) + 5x

Algebraic Visualizer

Equation Explorer

Equation: ax + b = c

Step-by-Step Solution: