b. 3x = 0 (mod 21)

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter1: Vectors
Section1.1: The Geometry And Algebra Of Vectors
Problem 56EQ
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Part b is the one I need help with 

Find all non-congruent solutions to the following congruences. Express solutions
using the standard residues, 0, 1, ... 20
а. х+7 %3D 0 (тоd 21)
b. Зx D 0 (тod 21)
С.
4х 3D6 (тоd 21)
Transcribed Image Text:Find all non-congruent solutions to the following congruences. Express solutions using the standard residues, 0, 1, ... 20 а. х+7 %3D 0 (тоd 21) b. Зx D 0 (тod 21) С. 4х 3D6 (тоd 21)
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