Question

Identify the variables from the following expressions:

$8\mathrm{n}-9$

Answer 1

Given: $8\mathrm{n}-9$

A variable is an alphabet or a term that represents an unknown number or unknown quantity and that is not a constant.

In $8\mathrm{n}-9$, the alphabet is $\mathrm{n}$.

Hence, $\mathrm{n}$ is the variable in the given expression.