Question

Ayuda por favor
Efectúa las operaciones indicadas

1. (-3)+3=
2. (-18)+21=
3. 17+(-6)=
4. 8+(-2)=
5. (-7)+13=
6. -18+7=
7. -8.3+9.6=
8. 5.4+9.8
9. -3.4+(5.9)=
10. 3.2+(-6.5)=
11. (-3.4)+(7.5)=
12. (-11.2)+(-7.1)=

Grax

Answer 1

1. 0
2. 3
3. 11
4. 6
5. 6
6. -11
7. 1.3
8. 15.2
9. 2.5
10.-3.3
11. 4.1
12. -18.3