# How do you simplify 7x-(9x+5)?

$7 x - \left(9 x + 5\right) = - 2 x - 5$
Since $\left(9 x + 5\right)$ can not be more simplified than already is, take the parentheses out and change the signals, multiplying it content by $- 1$:
$7 x + \left(- 1 \cdot 9 x\right) + + \left(- 1 \cdot 5\right) = 7 x - 9 x - 5 = - 2 x - 5$