# What is a simplified algebraic expression for the difference of nine times a number and five more than two times the number ?

$7 x - 5$
If the number is $x$, then nine times the number is $9 x$, five more than two times the number is $\left(2 x + 5\right)$ and the difference is:
$9 x - \left(2 x + 5\right) = 9 x - 2 x - 5 = \left(9 - 2\right) x - 5 = 7 x - 5$