Answer :

luana
[tex]5x+48+7x=12(x+4)\\\\12x+48=12x+48\\\\L=R\\\\There\ are\ infinitly\ many\ solutions.[/tex]


5x+48+7x=12(x+4)

12x+48=12x+48

[as they both are like terms, that equals to 0=0]

0=0

HOPE THIS HELPS!!!!!!