Solving basic equations & inequalities (one variable, linear)

This topic covers: - Solving one-variable linear equations - Solving one-variable linear inequalities
23 exercises available

Learn how to solve linear equations with parentheses using the distributive property. For example, solve -9 - (9x - 6) = 3(4x + 6).

Linear equations can either have a single solution, infinite solutions, or no solutions. Learn how to determine the number of solutions to a given equation, and how to create equations with a desired number of solutions.

An equation like ax+3x=bx+5 can still be solved for x even though some of the coefficients are variables.

Some of Sal's oldest (and roughest) videos on algebra. Great tutorial if you want to see what Khan Academy was like around 2006. You might also like it if you feel like Sal has lost his magic now that he doesn't use the cheapest possible equipment to make the videos.

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

Learn how to solve more complex (mathematical) inequalities. Also learn to construct inequalities to model real-world situations.