The answer would be solved as shown below.
1. Find the GCF. We find that it is 6.
2.54a/6 = 9a.
3.24b/6 = 4b, then,
4.6*(9a+4b), which equals
6(9a + 4b), then we check.
5.6*9a + 4*6b = 54a + 24b.
So the answer is 6(9a + 4b).
Hope this helps and have a nice day:)