As drawing a factor tree is not easy here, I'll use brackets to represent the different branches:
12 = (4 × 3) = ((2 × 2) × 3) = 2 × 2 × 3
54 = (6 × 9) = ((2 × 3) × (3 × 3)) = 2 × 3 × 3 × 3
→ gcf(12, 54) = 2 × 3 = 6.
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36 45 54
18,2 15,3 27,2
9,2,2 5,3,3 9,3,2
3,3,2,2 3,3,3,2
2 x 2 x 3 x 3 = 36
3 x 3 x 5 = 45
2 x 3 x 3 x 3 = 54
3 x 3 = 9, the GCF
Since 9 is a factor of 54, it is automatically the GCF, but if you insist...
9
3,3
54
27,2
9,3,2
3,3,3,2
The factors of 24 are:
1, 2, 3, 4, 6, 8, 12, 24
The factors of 54 are:
1, 2, 3, 6, 9, 18, 27, 54
The GCF is 6.
The GCF is 1.
18.18.18.18.18. 18.18.18.
The GCF of 8, 12, and 54 is 2.
The GFC of the numbers 54, 72 and 96 is 6.
Greatest common factor of 12 51 and 92 is 1.