8,9,10 how i found this out was if u replace m with 8 it will be 8+7 which is 15 and less then 18 for 9 its 9+7 which is 16 which is less then 18 and for 10 its 10+7 which is 17 which is less then 18 and for 11 its 11+7 is 18 which is equal to 18 so it would not apply to this equation hope this helps
To get your answer you would subtract 2 from 1 (2-1=?). Which will equal 1. You would do that because she has 2 apples and ate 1 where did that go? It's gone so she will only have 1 more left.