I think that you should drop her because she obviously has a problem with you that she's holding in, loves attention or maybe is jealous.
negative twenty-seven
Mathematically, the opposite of a number would be its negative. Rhetorically, the opposite of thirteen is "not thirteen".
negative seven
negative ten
-25 is the answer :)
Negative Thirteen. (14+-27=-13)
thirteen.
-0.65
-78
-15
-0.52
Note that adding a negative number is equivalent to subtracting a positive number, so 13 + -8 is the same as 13 - 8 which equals 5.