You need at least to numbers to find an LCM. If that's 81 and 24, the LCM is 648.
GCF (45, 81, 90) = 9
The GCF is 9.
810
1, 3 and 9 are common factors of 27, 45 and 81. 27, 45 and 81 are multiples of 1, 3 and 9.
90
225
45
You need at least to numbers to find an LCM. If that's 81 and 24, the LCM is 648.
81
45 = 32 × 5 81 = 34
For 45: 3 and 5 For 81: 3
The greatest common factor of 81 and 45 is 9Factors of 45: 1 3 5 9 15 45Factors of 81: 1 3 9 27 81The GCF of 45 and 81 is 9It is: 9
45% can be represented as 45/100 or 0.45 You ask yourself if 45/100 is 81, what would be the value for 100/110 (which is 1) and you find that by dividing 81 by 45/100, which is the same as dividing 81 by 0.45 Hence the number is 81/0.45 = 8100/45 = 900/5 = 180
81 - 6 - 45 - 12 = 18
It is: 45+81 = 126
GCF (45, 81, 90) = 9