19. Prove that for each integer a, 3 divides (a + 23a). Hint: sing Theorem 3 0g and tehnia

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.1: Real Numbers
Problem 27E
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Problem 3.5.19. Prove that for each integer a, 3 divides (a + 23a). Hint: You can simplify your
argument by using Theorem 3.28 and techniques similar to those we used in elass on Exercise
3.5.16.
Proof.
Transcribed Image Text:Problem 3.5.19. Prove that for each integer a, 3 divides (a + 23a). Hint: You can simplify your argument by using Theorem 3.28 and techniques similar to those we used in elass on Exercise 3.5.16. Proof.
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