Answer
7
Work Step by Step
The identity property of multiplication holds that $a\times1=a$ (for some real number $a$).
Therefore, $1\times7=7$.
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter R - Section R.4 - Properties of Real Numbers - R.4 Exercises - Page 38: 47
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