0
Wiki User
9 + 8 + 16 + 17 + 18 = 68
-16
16 + 16 + 16 + 17 + 18 + 18 + 18 + 19 + 19 + 20 + 20 + 20 + 21 = 238
18 + 16 = 34
2 C8H18 + 17 O2 = 16 CO + 18 H2O
12 + 16 + 18 + 20 + 9 = 75
-a + 2 = 18 - 2 = - 2 --------------- - a = 16 a = - 16
2+14=16
1
16
The numbers are 13 and 18
7 + 18
3