Chapter 1.1, Problem 38E

To determine

To analyse: The error of a variable expression “The difference of a number and 31” which is wrongly interpreted as $31-p$ and write the correct expression.

Answer to Problem 38E

The correct expression is $p-31$

Explanation of Solution

Given information:

The difference of a number and 31 is provided as $31-p$ .

The difference of a number and 31 is provided as $31-p$ .

In the above expression, it can be observed that the expression is wrongly written because if a number is subtracted from 31 then the expression must be written as $31-p$

Hence,

The correct phrase can be written as:

  $31-p$