Question

What number Could be added in the expression -4 -9 that the value of the expression is 0

Answer 1

if i’m understanding this correctly -9 + -4 is equal to -13 so wouldn’t you just add 13 to make it 0?

sorry if this is confusing

Answer 2

+13

Explanation:

-4-9 gives -13

when +13 is added to -13 , the expression becomes +13+(-13) =13-13=0