Question

what should be added to get 7/5 to get -2

Answer 1

-17/5 should be added so the answer would be
-17/5+7/5= -10/5=
-2

Answer 2

Let the required number be x
According to the question
7/5+x=-2
7+5x=-10
5x = -10-7
x = -17/5