Basic College Mathematics (10th Edition)

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Chapter 9 - Basic Algebra - 9.2 Adding and Subtracting Signed Numbers - 9.2 Exercises - Page 641: 97

Answer

a) $-2,-2$ b) $-8,-8$ c) $10,10$ The answers to each pair are the same because are the same operations, just changing the order.

Work Step by Step

a) $$-5 + 3 = -2$$ $$3 + (-5) = 3-5 = -2$$ b) $$-2 + (-6) = -2 - 6 = -8$$ $$-6 + (-2) = -6-2 = -8$$ c) $$17 + (-7) = 17 - 7 = 10$$ $$-7 + 17 = 10$$ The answers to each pair are the same because are the same operations, just changing the order.
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