Answer :
[tex]\frac{45}{18}=\frac{9 \times 5}{9 \times 2}=\frac{5}{2}=2 \frac{1}{2}=2 \frac{5}{10}=\boxed{2.5}[/tex]
I belive it's 2.5 because
you just divide 45 ÷ 18 = 25 then you turn it into a decimal and it will be 2.5
Hope I helped I am not sure if I'm correct
=)