Which equations show that the set of whole numbers is closed under addition?

Choose all answers that are correct.

A.

0 + (–1) = –1

B.

1 + 1 = 2

C.

2 + 0 = 2

D.

2 + (–1) = 1

Please I really need help!!!

Question

Which equations show that the set of whole numbers is closed under addition?

 

Choose all answers that are correct.
  
 
 

 
 

  

  A. 
 
0 + (–1) = –1
   
   

 
 

  

  B. 
 
1 + 1 = 2
   
   

 
 

  

  C. 
 
2 + 0 = 2
   
   

 
 

  

  D. 
 
2 + (–1) = 1
 
Please I really need help!!!

amistre64 · Answer

what are whole numbers?

anonymous · Answer

I really don't know I just really need help my dad said on here that people can tutor me?