Question

7. Define a variable and write an expression for the phrase.
8 minus a number

Answer 1

8-x ccccccccccccccccccccc

Answer 2

A variable is a quantity that may change within the context of a mathematical problem or experiment. Typically, we use a single letter to represent a variable. The letters x, y, and z are common generic symbols used for variables.


So basically for your expression:

8-x
Hope that helped