How to divide 5x by 10
Let's write this out as a fraction with 5x as the numerator and 10 as the denominator
[tex]\dfrac{5x}{10}[/tex]
10 is the same as 5*2
[tex]\dfrac{5x}{5*2}[/tex]
Both the numerator have a multiply of 5, you can remove the 5 from the fraction
[tex]\dfrac{x}{2}[/tex]
Let me know if you need any clarifications or if this wasn't what you needed, thanks!