Answer: 6(3h + 5k)
We are given 18 h + 30k
Firstly, we need to find the prime factor of each figure
[tex]\begin{gathered} \text{Prime factor of 18 = 2 x 3 x 3} \\ \text{Prime factor of 30 = 2 x 3 x 5} \\ \text{Hence, the GCF = 2 x 3 } \\ \text{GCF = 6} \\ \text{Hence, the expression can be written as} \\ 6(3h\text{ + 5k)} \end{gathered}[/tex]