# Algebra: Linear Equations 4 | Linear Equations | Algebra I | Khan Academy

Solving linear equations with variable expressions in the denominators of fractions

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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.

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## 19 thoughts

1. Optimistic WonTon says:

Why does it the 1 become negative?

2. InvalidSudo says:

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

3. LeStrange Msp says:

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

4. Carly Santos says:

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

5. norman ambauen says:

thank you so much !

6. TunezCottage says:

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.

7. Dhruv S says:

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

8. Jenny Zhang says:

u sound different

9. Z3 DK says:

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

10. Rita Crespo says:

you were really quick and horrible. You lost me.

11. Hernanditary says:

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!

12. Daniel Tyson says:

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

13. Josh Podolsky says:

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

14. Not Here says:

Confused lol

15. ItzCheezey says:

Im learning this in GRADE 5 in Australia

16. Dhruv Gogna says:

why is it 8 ( x+5) ???
Shouldnt it be x+2 . x+5 ????/

17. Banana Legend GamingXL says:

Damn, he made this video when I was born

18. AtomTube says:

im 14

19. Brandon Pazak says:

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.