What are variables, expressions, and equations? | Introduction to algebra | Algebra I | Khan Academy
Watch video What are variables, expressions, and equations? | Introduction to algebra | Algebra I | Khan Academy online without registration, duration 06 minute 55 second in high hd quality. This video was added by user Khan Academy 18 February 2012, don't forget to share it with your friends and acquaintances, it has been viewed on our site 2 million once and liked it 7 thousand people.