Answer :
[tex]\bigstar\boxed{\large\bf\purple{\leadsto 7x -46}}[/tex]
__________________________________________
[tex]\large\sf{\underline{Given:}}[/tex]
[tex]\sf{\longrightarrow 3x +4(x-8)-14}[/tex]
[tex]\sf{\longrightarrow 3x+ 4x-32-14}[/tex]
[tex]\sf{\longrightarrow 7x - 46}[/tex]
[tex]\large\sf{\underline{Hence,\:your\: answer\:is\:7x-46}}[/tex]