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🔍 PREVIEW MODE – Only you can see this. Back to Admin EduTek Lesson Notes Shop Print PDF Home › SS › Mathematics › Simple Equations and Variations SS 1 Simple Equations and Variations Mathematics SS 1 First Term | Week 8 Learning Objectives By the end of this lesson, students should be able to: Change the subject of a formula involving roots, brackets, and powers. Substitute values into formulae to evaluate unknown quantities. Solve problems on direct, inverse, and joint variation. Apply variati [Preview only]