Solving linear equations with variable expressions in the denominators of fractions

Watch the next lesson:

Missed the previous lesson?

Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It’s also seen as a “gatekeeper” subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it’s impossible to move forward. It’s used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we’ll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.

For free. For everyone. Forever. #YouCanLearnAnything

Subscribe to Khan Academy’s Algebra channel:

Subscribe to Khan Academy:

Why does it the 1 become negative?

In what grade would this be taught in the United States? Where I’m from we learn this in grade 7..

what if u wanna get the answer to decimal point like instead of times1/5 devide by 5 is there a way to do that without a calculator like a fast easy way

im in 5th grade and i study algebra by my own! >w<

thank you so much !

I didn’t get -34/5 I only got 34/5 because instead of getting rid of the 8x I got rid of the 3x first, and my result ended up different, how do I know whether or not I did it right because you should be able to do it either way.

Lol, I learned more in 7 and a half minutes than I learned from my teachers in a week.

u sound different

I’m an Asian fellow I did this when I was being born

you were really quick and horrible. You lost me.

I just got out of the military and I’m going back to school, so this is a huge help in refreshing my memory. You explain things so clearly and I appreciate it. Thank you so much!

Why do you take (x+1) from the left of the equality sign to the right of the equality sign in brackets?

Wow, this video is over 10 years old now with almost 1 million views.

Confused lol

Im learning this in GRADE 5 in Australia

why is it 8 ( x+5) ???

Shouldnt it be x+2 . x+5 ????/

Damn, he made this video when I was born

im 14

the teacher who did all the videos before this one, was much more easy to follow. he was very simple and took things slow. This teacher is fine, but not as good at explaining his steps in my opinion.