In this unit, I explain how to write and solve single/multi-step equations, solving for various types of outcomes (no solution, 1 solution, all solutions), use ratios and proportions, and work with percents/percent of change (including discounts and taxes).
BTW - I'm trying different file type: WebM. I made using Google Slides (may have to download into your Drive). Let me know if it doesn't open, and I'll make sure to convert them.