Unit 6 (2nd ESO): Equations
Video 1: How to Solve One-Step Equations: https://www.youtube.com/watch?v=JrolgDL5v3w
Video 2: Algebra Basics: Solving 2-Step Equations: https://m.youtube.com/watch?v=K6ewhnaL4KQ&feature=em-subs_digest&rdm=1knb9xjm&client=mv-google
Video 3: How to Solve Two-Step Equations: https://www.youtube.com/watch?v=jExsRDEO0gU
Video 4: How to Solve Multi-Step Equations: https://www.youtube.com/watch?v=ahtHbGYSZ-4