The GCF is 1. That means the LCM is the two numbers multiplied together, or 210.
The gcf and LCM of 21 and 26 are 1 and 546 respectively
LCM 21, and GCF =1
The LCM of 6 and 21 is 42. Their GCF is 3.
Gcf: 7 lcm: 294
The GCF is 3. The LCM is 63.
21 and 63, respectively.
The GCF of 21 and 84 is 21, since it is a factor of 84. The LCM of 21 and 84 is 84, since it is a multiple of 21.
3 3*7=21 3*30=90 * * * * * That is the Greatest Common Factor, GCF, not the LCM. LCM(21, 90) = 630
The LCM is: 441The GCF is: 7
The LCM of 10 and 21 is: 210Least Common Multiple (LCM) for 10 21 is 210
They are 21 and 546 respectively
To make this easier, let's first factor 18 and 21 into their prime factors: 18=2*3^2 21=3*7 Now it's very easy to find the LCM and GCF. The LCM is 2*3^2*7=126, and the GCF is 3.