Question

- 7 - (-1) + 18-(-9)-9 + (19)​

Answer 1

-7-(-1)+18-(-9)-9+1(9)

-7+1+18+9-9+19

31

Answer 2

- 7 - (-1) + 18 - (-9) - 9 + (19)​

- 7 + 1  + 18 + 9 - 9 + 19

1 + 18 + 9 + 19 - 7 - 9

47 - 16

31

Eternamente axllxa