My 3 by 3 System of Equations Exam Question

How to solve a 3 by 3 system of equations. I think this is the most organized way. 🛍 Shop my math t-shirts & hoodies: 👉 https://amzn.to/3qBeuw6 👉 Support this channel and get more content   / blackpenredpen   #maths #algebra #mathtutorials #blackpenredpen