12 - Solving 3-Variable Linear Systems of Equations - Substitution Method 

Thank you. Your inclusion for practical use real makes the system seem far less abstract and easier to understand

You are an amazing teacher

Could've done more sketches showcasing how to draw planes with 3 variables.

THANK YOU... SIR...!!!

I love math. Trying to help my kids with common core I feel like pulling my hair out.

great video very clear

Sir, request u please keep engineering circuits videos for free plz sir.

Excellent!