480
30
Let's represent the number as "x". The given equation can be written as 2x - 12 = 30. Adding 12 to both sides, we get 2x = 42. Finally, dividing both sides by 2, we find that x = 21. So, the number is 21.
The prime factors are: 12 = 2 * 2 *3 21 = 3 *7 30 = 2 * 3 * 5 So the greatest common factor is 3.
3 12 = 2^2 x 3 21 = 3 x 7 30 = 2 x 3 x 5 hcf = 3
18
The Least Common Multiple (LCM) for 12 21 30 70 is 420.
21 and 9 21 - 9 = 12 21+9 = 30
The factors of 12 are: 1, 2, 3, 4, 6, 12 The factors of 21 are: 1, 3, 7, 21 The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30
the Laplace transform of sin2 3thttp://www7.0zz0.com/2009/12/30/19/748450027.gif
The LCM is: 420
16 and 21
The GCF is 3.
420
12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30 (including 12 and 30)
Looks like 57: 12+9=21, +9=30, +9=39, +9=48, +9=57.
30
The GCF is 3.