Equations & inequalities introduction

This course is a part of 6th grade, a 8-course Topic series from Khan Academy.

Learn about equations and inequalities that have variables in them. These tutorials focus on solving equations and understanding solutions to inequalities.

This course contains 8 segments:

Algebraic equations basics

Explore what it means for equations with variables (algebraic equations) to be solved.

One-step equations intuition

A high-level, conceptual walk-through of what an equation represents and why we do the same thing to both sides of it

One-step addition & subtraction equations

Solve equations by adding and subtracting numbers from both sides.

One-step multiplication and division equations

Solve equations by multiplying and dividing numbers from both sides.

Finding mistakes in one-step equations

Practice spotting the mistake in someone else's work as they attempt to solve one-step equations.

One-step equation word problems

Let's use our algebra tools to solve a problem of earth-shattering importance: which Super Yoga plan is the best value! In this word problem, you'll put to practice your knowledge of variables, substitution, and one-step equations.

Intro to inequalities with variables

Algebraic inequalities (inequalities with variables) are useful for describing real-world situations. Learn how to write inequalities and graph them on the number line.

Dependent and independent variables

Sometimes one variable depends on another. For example, the amount of money you make might depend on how many hours you work.