# How do you define a variable and write an expression for each phrase: The number of months in 7 years?

Apr 28, 2017

$12 x$ x is the numbers of years

#### Explanation:

In 7 years you have $7 \cdot 12$

$= 84$ months.

Your expression is $12 x$

where
$x$ is number of years.

But 12 is defined and constant (each year has 12 months)