Learn algebra online with Khan Academy, covering equations and inequalities through engaging lessons and exercises to enhance your understanding.

Inequalities are more than abstract concepts and exercises. They help solve real life problems. Here's an example.

In this unit, we learn how to solve linear equations and inequalities that contain a single variable. For example, we'll solve equations like 2 (x+3)= (4x-1)/2+7 and inequalities like 5x-2≥2 (x-1).

An equation requires 2 expression separated by an equals symbol (=). An inequality also takes 2 expressions separated by an inequality symbol ("<", ">", "<=", ">=").

Kwame must earn more than 16 stars per day to get a prize from the classroom treasure box. Write an inequality that describes S , the number of stars Kwame must earn per day to get a …

Let's do some compound inequality problems, and these are just inequality problems that have more than one set of constraints. You're going to see what I'm talking about in a second.

Sal solves the inequality 5x+7>3 (x+1), draws the solution on a number line and checks a few values to verify the solution.

Assuming you need help with this lesson, remember that solving an inequality uses the same techniques as solving equations. So, if you can solve a 2-step equation, then you can solve a …

There are lots of strategies we can use to solve equations. Let's explore some different ways to solve equations and inequalities. We'll also see what it takes for an equation to have no …

The student will represent, solve, and interpret the solution to quadratic equations in one variable over the set of complex numbers and solve quadratic inequalities in one variable.