CHALLENGE Determine whether each statement is always, sometimes, or never true. Explain
Chapter 6, Problem 48(choose chapter or problem)
CHALLENGE Determine whether each statement is always, sometimes, or never true. Explain. a. If a < b and c < d, then a + c < b + d. b. If a < b and c < d, then a + c b + d. c. If a < b and c < d, then a - c < b - d.
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