5. Let R be a relation defined on Z by a Rb if and only if 3 | (a + 2b). (a) Prove that R is an equivalence relation. (b) Determine the equivalence class

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.3: Divisibility
Problem 18E: Let R be the relation defined on the set of integers by aRb if and only if ab. Prove or disprove...
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5. Let R be a relation defined on Z by a Rb if and only if 3 | (a + 2b).
(a)
Prove that R is an equivalence relation.
(b)
Determine the equivalence class
Transcribed Image Text:5. Let R be a relation defined on Z by a Rb if and only if 3 | (a + 2b). (a) Prove that R is an equivalence relation. (b) Determine the equivalence class
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