Chapter 12, Problem 1CUR

To determine

To find : the value of expression $x+z$ when $x=2$ and $z=5$ .

Answer to Problem 1CUR

the value of expression $x+z$ is $7$ when $x=2$ and $z=5$ .

Explanation of Solution

Given : the expression is $x+z$ .

Calculation: to find the value of this expression substitute x by 2 and z by 5 then add them.

  $\begin{array}{l}x+z=2+5\text{ [substitute]}\\ x+z=7\text{ [add]}\end{array}$

Hence,the value of expression $x+z$ is

  $7$ when $x=2$ and $z=5$ .