Question

give me an example of variable – a letter used to represent a number that is unknown

Answer 1

[AI-generated answer — Bot GPT 3.5]

A common example of a variable used to represent an unknown number is in algebraic equations. Let's say we have the equation:

2x + 8 = 20

Here, "x" is the variable representing the unknown number. By solving the equation, we can determine the value of x.