Example 3: Solving systems by elimination | Systems of equations | 8th grade | Khan Academy

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Solving systems by elimination 3

Missed the previous lesson?

8th grade on Khan Academy: 8th grade is all about tackling the meat of algebra and getting exposure to some of the foundational concepts in geometry. If you get this stuff (and you should because you're incredibly persistent), the rest of your life will be easy. Okay, maybe not your whole life, but at least your mathematical life. Seriously, if you really get the equations and functions stuff we cover here, most of high school will feel intuitive, even relaxing. (Content was selected for this grade level based on a typical curriculum in the United States.)

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Your videos are a great help, thank you. Have you done something on Gauss elimination?

shellie
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Sal vs the straight line, an on going battle xD

JackMoranRain
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My equation is
5x+4y=-30
3x-9y=-18
I watched your videos and I ran into problems. Can you contact me or show an example. Try to contact me if possible and show me how to do this please.
Thanks

FloridamanMN