Solve a System of Equations with Three Variables Step by Step

👉 In this video I will work through two examples of solving a system of equations with three variables step by step. We will apply substitution and elimination to help use solve for the values that makes the system true.

Timestamps:
0:00 Intro
0:36 Example #1
3:00 Example #2

Corrections:
2:15 It's -1, not positive 1.
4:34 It's not 6x, but 9x.





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[Meloneru]

a should be equal to -1 😐 bc its +6-7 when u switch side

[chrismedow]

I am new to this channel. I am in college and taking a math class online, the video's this guy has are super helpful! He gets right to the point and explains what he his doing and show's visuals, that helps me alot. 10/10 math teacher.

[GoogleAccount-xlic]

Bruh, Im so glad to see you still posting! I find your videos like 8 years ago are very helpful!

[BiggerSpork]

2:30 mr Logan the answer for a is a -1 not a normal 1 sir

[arfpop]

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[bentalbot]

You're better than all the maths teachers in my school combined . 😐👍

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[RealSlopeDude]

Proof that even the best teachers can make mistakes.

[ellysonof]

hiiii i love your videos you’ve helped me so much with algebra 1❤️

[Wee_Gee]

I watched some of your other videos. You’re incredible, these videos help so much. Thank you. 😄

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I am addicted to this channel.
I watch it to help my son as his teacher is useless, you are brilliant.
Thank you! 🙂

[jewelrosep.benedicto]

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[TheRock_t]

WOW this video is so new and helpful thank you

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Thank you so much sir...your work is extremely appreciated even from miles of a location.
I wish to meet you one day and Introduce you to the principal of my school.
I may not be a student of yours but you are definitely my most preferable and favorite teacher.
Stay safe during this pandemic around the world! :))

[pamelastoesz]

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[sewerrat]

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[gunerhusseyin]

Mr Mclogan please do a few videos on linear quadratic systems. Ie how to find the intersection of a linear graph crossing a quadratic. You have 0 videos on this. Please please please :)

[mixer]

Great teacher help me answer my Math Infinite Gemeotric Geometric Series Geometric mean Word/s Problem.

[exoticcndm]

Dude I’m in 8th grade and this dude explained stuff way above my level and somehow understood it with my learning disabilities