Answer:
54 and 2
Explanation
Given the expression;
[tex]\frac{54}{7}\times\frac{1}{2}[/tex]
To know which will cross cancel, we can rearrange to have;
[tex]\begin{gathered} \frac{54}{2}\times\frac{1}{7} \\ \text{ = }\frac{27}{1}\times\frac{1}{7} \end{gathered}[/tex]
From the simplification, we can see that 2 and 54 cross cancel from the expression. Hence the required answer is 54 and 2
