Chapter 5.2A, Problem 7A

Evaluate each of the following expressions, if possible.

a. $\left({}^{-}10{÷}^{-}2\right)\left({}^{-}2\right)$

b. $\left({}^{-}10\cdot 5\right)÷\left(5\right)$

c. ${}^{-}8÷\left({}^{-}8+8\right)$

d. $\left({}^{-}6+6\right)÷\left({}^{-}2+2\right)$

e. $\left|{}^{-}24\right|÷\left[4\left(9-15\right)\right]$