$$\left. \begin{array} { l } { 14 - 68 ( 2 x - ( - 4 ) ) } \\ { 9 - ( 7 - 24 : ( 8 + 6 x ) ] } \\ { 9 - \{ 7 - 24 : ( 8 + 6 x ) \} } \end{array} \right.$$
$2\left(-68x-129\right),\ \frac{2\left(3x+10\right)}{3x+4},\ \frac{2\left(3x+10\right)}{3x+4}$
