Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 3 - Adding and Subtracting Fractions - 3.2 Least Common Multiples - 3.2 Exercises: 63

Answer

The LCM is $120$. The number $240$ is a multiple of $120$ and cannot be the LCM of $8, 3, 5, 4, 10$.

Work Step by Step

$3 = 3$ $5 = 5$ $4 = 2 \cdot 2$ $8 = 2 \cdot 2 \cdot 2$ $10 = 2 \cdot 5$ LCM $= 2 \cdot 2 \cdot 2 \cdot 3 \cdot 5 = 120$.
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