Linear Algebra: A Modern Introduction

Published by Cengage Learning
ISBN 10: 1285463242
ISBN 13: 978-1-28546-324-7

Chapter 1 - Vectors - 1.1 The Geometry and Algebra of Vectors - Exercises 1.1 - Page 17: 39



Work Step by Step

First, perform the computation in $\mathbb{Z}$: $$8(6+4+3)=8(13)=104$$ To convert to $\mathbb{Z}_9$, divide $104$ by $9$, to find the remainder of $5$.
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