Chapter 1.1, Problem 7TI

Use the properties of real numbers to rewrite and simplify each expression. State which properties apply.

$\text{a}.\left(-\frac{23}{5}\right)\cdot \left[11\cdot \left(-\frac{5}{23}\right)\right]$

$\text{b}\text{. 5}\cdot \left(6.2+0.4\right)$

$\text{c}\text{. 18-}\left(7-15\right)$

$\text{d}\text{. }\frac{17}{18}+\left[\frac{4}{9}+\left(-\frac{17}{18}\right)\right]$

$\text{e}\text{.}\text{6}\cdot \left(-3\right)+6\cdot 3$