Question

Помогите!!!
3.5+4.5=
3.5+(4.5)=
-3.5+4.5=
-3.5+(-4.5)
3.5-4.5=
3.5-(4.5)=
-3.5-4.5=
-3.5-(-4.5)=

Answer 1

1. 8
2. 8
3. 1
4. -8
5. -1
6. -8
7. -8

Answer 2

1) 3,5+4,5=8
2)3,5+(4,5)=8
3)-3,5+4,5=1
4)-3,5+(-4,5)= -8
5)3,5-4,5= -1
6)3,5-(4,5)= -1
7)-3,5-4,5= -8
8)-3,5-(-4,5)= 1