Basic Algebra : Simplifying Expressions (1)
Lew W. S.
Practice at least 5 questions to check your own understanding and to master the skill of doing this type of questions. (For ease of use on mobile devices, press on the small [ ] icon at the bottom corner in the graphics view)
Unit 4 (5th)
Proposition 16 Proof, Euclid Book I of Elements
På resande fot uppg. 8