# If n represents a number then how do you write an expression for 7 less than four times the difference of n and 5?

$n - 5$ is the difference of $n$ and 5
$4 \left(n - 5\right)$ this is four times it
$4 \left(n - 5\right) - 7$ and this is seven less than it
$4 n - 20 - 7 = 4 n - 27$ if you expand it.