Answer:
Step-by-step explanation:
Hello,
Dividing by 1/2 is like multiplying par 2, right ?
Dividing by 5/10 is like multiplying par 10/5, right ?
and then
[tex]\dfrac{\dfrac{9}{10}}{\dfrac{5}{10}}=\dfrac{9}{10}\times \dfrac{10}{5}=\dfrac{9}{5}[/tex]
as 10/10=1
Thanks