I don't get this at all can you pls help me?

Answer:
[tex]\huge \boxed{\mathrm{-13.85}}[/tex]
Step-by-step explanation:
[tex]4.6+(-7.28)-11.17[/tex]
Removing brackets.
[tex]\Rightarrow 4.6-7.28-11.17[/tex]
Combining.
[tex]\Rightarrow -2.68-11.17[/tex]
[tex]\Rightarrow -13.85[/tex]