Answer
a. 5
b. $\frac{2}{3}$
c. a
d. -3
Work Step by Step
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.