positive 18
In blackjack it can be 9 or 19
50/10+16-19= 2
It is: 7+13-6+5 = 19
17 + 14 + 17 + 19 + 18 + 13 + 11 = 109
18
It is: 19 minus 1 = 18
4 - 7 + 14 + 2 - 19 + 6 = 0
19
16 + 16 + 16 + 17 + 18 + 18 + 18 + 19 + 19 + 20 + 20 + 20 + 21 = 238
18+18+18+19+23+23+24+24=167
-19