Question

[le vu hai my]

1+1-2+2-3+3-4+4-5+5-6+6-7+7-8+8-9+9-10=?

Answer 1

[Võ Trang Nhung]

1+1-2+2-3+3-4+4-5+5-6+6-7+7-8+8-9+9-10=-8

Answer 2

[nguyễn tùng dương]

bằng 10 nha