Chapter 1.5, Problem 11E

To determine

To Evaluate: the expression $x+(-3)$ , when $x=-9$

Answer to Problem 11E

The sum of $x+(-3)$ when $x=-9$ is $-12$

Explanation of Solution

Given information:

Consider, the expression,

  $x+(-3)$

Calculation: Substitute $-9$ for $x$ then add $-9+(-3)$ and use the common sign.

Therefore,

  $\begin{array}{l}x+(-3)\\ =-9+(-3)\\ =-12\end{array}$$\text{[Since, }x=-9]$

Hence,

The sum of $x+(-3)$ when $x=-9$ is $-12$