Question

Which equations show that the set of whole numbers is not closed under subtraction?

Choose all answers that are correct.

A.
1 – (–2) = 3

B.
1 – 2 = –1

C.
2 – 0 = 2

D.
2 – 4 = –2

Answer 1

whole numbers can not be negative

Answer 2

ok

Answer 3

so, what are the right options?

Answer 4

so A and C

Answer 5

THANK YOU. I only have a few more

Answer 6

I think you have to search for negative results

Answer 7

the question is "...is not closed..."

Answer 8

oh, so B and D

Answer 9

correct!