Chapter 1.4, Problem 74E

To determine

To calculate: the value of expression $\frac{x-22}{y}$ when $x=2$ and $y=8$ .

Answer to Problem 74E

The value of expression $\frac{x-22}{y}$ is - $2.5$ when $x=2$ and $y=8$ .

Explanation of Solution

Given information : consider, the expression provided in the question,

  $\frac{x-22}{y}$ .

Calculation : to evaluate the expression, it is needed to substitute x by 2and y by 8 then subtract 22 from 2 after that divide the result by 8. Because of different sign result will be negative.

$\begin{array}{l}\frac{x-22}{y}=\frac{2-22}{8}\\ \frac{x-22}{y}=\frac{-20}{8}\\ \frac{x-22}{y}=-2.5\end{array}$ [substitute, subtract and divide]

Hence,

Thus, The value of expression $\frac{x-22}{y}$ is - $2.5$ when $x=2$ and $y=8$ .