21 = xxi
22 = xxii
23 = xxiii
24 = xxiv
25 = xxv
26 = xxvi
27 = xxvii
28 = xxviii
29 = xxix
30 = xxx
2130/7 = 304.285714 recurring (that is, 304.285714285714...) Therefore, 7 does not go into 2130.
You need at least two numbers to find an LCM. If that's 21 and 30, the LCM is 210.
266.25
There cannot be common factors of just one number. To be common there need to be at least two numbers.
It seems like you might be referring to a mathematical expression, but the notation isn't clear. If you're looking for an equation involving the numbers 16, 2130, and 13, could you clarify how these numbers are related? For example, are you looking for a multiplication or addition equation? Please provide more details for a precise response.
2130 millimeters = about 7 feet (6.98818898 feet).
2130
21.3%
1630. Eastern time is -5 GMT
9:30pm
2130
Santa Barbara - 1984 1-2130 was released on: USA: 6 January 1993