LCM(21, 7) = 21
21
3=3*1 7=7*1 21=3*7 LCM=(3*7)=(21*1)=21
The factors of 7 are 1 and 7. The factors of 21 are 1, 3, 7, and 21. The only numbers that are factors of BOTH 7 and 21 are 1 and 7.
7/21:= 7 ÷ 21= 0.333 in decimal
Factors of 21: 1, 3, 7, 21.Factors of 7: 1, 7.GCF (21, 7) = 7
LCM(21, 7) = 21
The LCM of 7 and 21 is 21. Since 7 is a factor of 21, the LCM is automatically 21.21 is.
21 is a multiple of 7 because, 3*7 = 21
the factors of 21 are 3,7,1, 21,and -1, -21,-3,-7. the factors of 49 are 1,49,7,7 and -1, -21-7-7.
The factors of 21 are: 1, 3, 7, and 21. The factor pairs of 21 are (1, 21) and (3, 7).`1.3,7.21
21
3=3*1 7=7*1 21=3*7 LCM=(3*7)=(21*1)=21
The factors of 7 are 1 and 7. The factors of 21 are 1, 3, 7, and 21. The only numbers that are factors of BOTH 7 and 21 are 1 and 7.
21 7
7/21:= 7 ÷ 21= 0.333 in decimal
Its factors are: 1 3 7 and 21 Note that 3 and 7 are prime numbers