15
Wilfredo Romaguera
Wiki User
∙ 2017-10-22 12:35:54-21 - -36 is the same as -21 +36 =15
36 - 21 = 1536 - 21 = 1536 - 21 = 1536 - 21 = 15
3. 7x3= 21 12x3= 36
21 + 15 = 36
21/7 = 3 21/3 = 7 36/2 = 18 36/4 = 9 36/6 = 6 36/12 = 3 36/18 = 2 and, of course, both 21 and 36 can be divided by 1 and themselves
1 and 3 are the common factors of 21 and 36.
LCM(9, 21, 36) = 252.
36
It is: 21/36 = 7/12 simplified
The common factors of 21 and 36 are 1 and 3
51
32
The LCM is 252.