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Chapter 1: Q1. (page 36)

Write a phrase as a variable expression: the difference of –15 and a number x.

Short Answer

Expert verified

The variable expression for the given phrase is -15-x.

Step by step solution

01

Step-1 – Concept of variable expression

A variable expression or algebraic expression consists of one or more terms including variables and numbers that are connected by algebraic operations +,-,×,÷.

02

Step-2 – Consider the number

Let the unknown number be x.

So, we need to find the difference of the number –15 and the number x.

03

Step-3 – Write Variable expression

The term difference refers to subtraction. So, in order to find the difference of –15 and a number x, subtract the number x from the number –15 as shown below,

Differenceof−15andanumberx=Differenceof−15andx=−15−x

Thus, the variable expression for the given phrase is -15-x.

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