## Algebra: A Combined Approach (4th Edition)

a. 5 b. $\frac{2}{3}$ c. a d. -3
a. Two negatives make a positive, so -(-5) = 5. b. Two negatives make a positive, so $-(-\frac{2}{3}) = \frac{2}{3}$ c. Two negatives make a positive, so -(-a) = a d. |-3| = 3, so -|-3| = -3.