# How do you write an algebraic expression for the phrase "six less than double a number"?

Mar 14, 2018

$2 x - 6$

#### Explanation:

"Six less than.." means "Subtract 6 from".

Do not confuse this with "Six less..." which means "Subtract from 6".

Confusing, I know.

We know that "Double a number" means $2 x$, where $x$ is your mystery number.

Therefore, we have:

$2 x - 6$, which translates to "6 less than 2x" or "6 less than twice a number"