Question: Hi can you help me work on this proof problem? Thank you in advance 2. (a) Show that multiplication is a well-defined binary operation on

Hi can you help me work on this proof problem? Thank you in advance

2. (a) Show that multiplication is a well-defined binary operation on the set Zn of con- gruence classes of integers modulo n. (b) Show that addition is a well-defined binary operation on the set Zn of congruence classes of integers modulo n

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