4
279,33,3,34515,35,3,33 x 3 = 9, the GCF
3(3x + 5)
The GCF is 16.
Yes, but it's easier to factor out the GCF first.
153,53055,61The GCF is 5.
1, 111, 19The GCF is 1.
4
279,33,3,34515,35,3,33 x 3 = 9, the GCF
The factor tree will show you the prime factorization. You still need to compare that to another number to get a GCF.
1
2(4x + 5)
9 3,3 18 6,3 2,3,3 The GCF is 9.
The greatest common factor of 10y plus 15 is 5.
It doesn't matter what you use, you need more than one number to find a GCF.
2412,26,2,23,2,2,26030,215,2,25,3,2,22 x 2 x 3 = 12, the GCF
42 21,2 7,3,2 You need at least two numbers to find a GCF.