19/3 x 11/6 = 209/18 or 11 and 11/18
11 + (19 + 6) = 36(11 + 19) + 6 = 36So they are both equal. The brackets make no difference in this case.
LCM of 6, 11, and 18 = 198
(11/18) - (1/6) = (11/18) - (3/18) = (11-3)/18 = 8/18 = 4/9
11/18 - 1/6 = 11/18 - 3/18 = 8/18 = 4/9
18. 1 and18 add to 19, 2 and 9 add to 11, and 3 and 6 add to 9.
The Least Common Multiple of 6, 11, and 18 is 198.
The GCF is 1.
(18 + 18 + 11 + 7 + 6 + 11 + 10 + 20 + 7)/9= 12========The mean, also often called the "average", is1/9 of (18 + 18 + 11 + 7 + 6 + 11 + 10 + 20 + 7)
69-1-1-2-2-3-3-4-4-5-5-6-6-7-7-8-8-9-9-10-10-11-11-12-12-13-13-14-14-15-15-16-16-17-18-18-19-19-20-20= -351
6/18 + 3/19 = 168/342 or 28/57
1, 2, 3, 6, 9, 18 1, 19