Question

How do you write an equation from the phrase "Seven less than twice a number equals 19"?

Answer 1

`2n-7=19`

Explanation:

Twice a number `n` means `n+n`, or `2*n`

An amount (in this case, seven) less than a number means that number subtracted by the amount (seven)

7 is being subtracted from 2n

`2n-7=19`

Answer 2

`2n-7=19`

Explanation:

Well first we should look at the part that says "twice a number"

This number can be anything so let's assign a variable to it
Let `n =` a number

And we also see at the end "twice a number equals 19"

So we get `2n=19`

Then we see that "Seven less than" `2n` all equals `19`

So we get

`2n-7=19`

Now if you would want to solve this equation you first add `7` to both sides and we get `2n=26`

Then we divide both side by `2`

So `n = 13`