Does anyone know how to do this HELP

Answer:
[tex]3n-6.4[/tex]
Step-by-step explanation:
[tex]-1.5(4-n)+2.8-1.5(4-n)+2.8[/tex]
Collect like terms:
[tex](-1.5(4-n)-1.5(4-n))+(2.8+2.8)[/tex]
Simplify:
[tex]-3(4-n)+5.6[/tex]
Expand:
[tex]-12+3n+5.6[/tex]
Collect like terms:
[tex]3n+(-12+5.6)[/tex]
Simplify:
[tex]3n-6.4[/tex]