-9
n + 18 = 27 subtract 18 to 18 and 27 18-27=9 n = 9
The GCF of 18 and 27 is 9.
18 + 9 = 27
13 + 16 + 18 + 20 + 21 + 26 + 27 + 27 + 28 + 36 + 39 + 42 + 43 = 356
-45 + 18 = -27
27-9 =18. 18/3 =6
160
18 + 36 + 45 + 9 + 9 + 54 + 27 + 72 + 81 = 351
The sum of -27 and 45 is 18.
27
The GCF is 9.
If you mean: 18*27 = 18m+18*7 then the value of m works out as 20