1. -4x + 5x =
2. 1 + 5v + v - 6 =
3. 4n + 4 + 1 + 3n =
4. 11a + 11a =
5. -2x - 8 - 7x + 2 =
6. 7v + 6v =
7. -8x - 10x =
8. 6 - 7n - 2n - 8 =
9. 2k - k =
10. -p - 11 + 3 =
11. 9n + 3n =
12. 12x + 11 - 4 =
please help me answer 1-12 please i need it nowww please and plaese answer all of them please actally answer i need it