If 5+5=9, 5+4=7, 5+3=5 then 5+2=?

Answer 1

5+5-1=9
5+4-2=7
5+3-3=5
5+2-4=3

Answer 2

5+5=9,(-1)
5+4=7,(-2)
5+3=5,(-3)
then 5+2=2,(-4)

Answer 3

5 + 5 = 9
5 + 4 = 7
5 + 3 = 5
5 + 2 = 3

Answer 4

5+5=10-1=9
5+4=9-2=7
5+3=8-3=5
5+2=7-4=3

Answer 5

5+5=10-1------->9,
5+4=9-2-------->7,
5+3=8-3-------->5
then

5+2=7-4---------->3

Answer is =3