Answer
(a) -2
(b) -21
(c) -7
Work Step by Step
Using the rules of algebra, we obtain:
(a) $- 11 - (-9 ) = -11 + 9 = - 2$
(b) $34 + (- 55) = 34 - 55 = -21$
(c) $-56/8 = - 7$
General, Organic, and Biological Chemistry: Structures of Life (5th Edition)
by Timberlake, Karen C.
Published by
Pearson
ISBN 10:
0321967461
ISBN 13:
978-0-32196-746-6
Chapter 1 - Chemistry in Our Lives - 1.4 Key Math Skills for Chemistry - Questions and Problems - Page 18: 1.18
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