Question

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

Answer 1

`2x-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 `2x`, where `x` is your mystery number.

Therefore, we have:

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