Respuesta :
The expression doubles, so I'll only be solving half.
[tex]34-4z+54z-12+12z\\ (34-12)+(-4z+54z+12z)\\ \\22 + 62z[/tex]
[tex]34-4z+54z-12+12z\\ (34-12)+(-4z+54z+12z)\\ \\22 + 62z[/tex]