Question

2 + ?(missing number) = -2

Answer 1

`-4`

Explanation:

we will mark the missing number as x

`2+x=-2`

To get ride of 2 we can subtract it from the left side but, whatever that is done to one side has to be done on the other side so we do this

`2-2+x=-2-2`

`0+x=-4\\x=-4`

Now we find that the missing number is -4

Hope this helps please let me know if this is confusing or if you have further questions