Respuesta :

Step-by-step explanation:

[tex]1.2 + 3.45 + 6.789 \\ = 4.65 + 6.789 \\ = 11.439[/tex]

Answer:

11.4

Step-by-step explanation:

1.2 + 3.45 + 6.789 = 11.4392611.4

-TheUnknownScientist