Algebra I. Gelfand

Birkhauser Boston Inc 1993 Birkhauser Boston Inc 160 Gelfand, I.M. a Shen, Alexander Paperback / softback

The best way to deal with them is: Solve the problem by yourself - compare your solution with the solution in the book (if it exists) - go to the next problem. Adding three apples to five apples is the same as adding five apples to three - apples do not disappear and we get eight of them in both cases.