Respuesta :
This is the commutative property of addition. It basically says, x+y=y+x.
To answer your question, 103+21=21+103
To answer your question, 103+21=21+103
[tex]103 + 21 = Unknown + 103[/tex]
[tex]Unknown = 21[/tex]
[tex]21+103[/tex]
[tex]Unknown = 21[/tex]
[tex]21+103[/tex]
