-45 + 18 = -27
12 + 23 + 45 + 67 + 16 + 18 + 45 = 226
45 + 18 = 63
The GCF of 18 and 27 is 9.
18 + 27 = 45
The sum of -27 and 45 is 18.
It is: (15+18)+12 = 45
18 + 36 + 45 + 9 + 9 + 54 + 27 + 72 + 81 = 351
(18 + 36) + (45 - 27) = 54 + 18 = 72
20/45 + 18/45 = 38/45
The answer is 18. To check, plus 18 and 18 to find out.
45 + 48 = 93
They all add up to 70