Question

What is 45 and a half as a fraction in simplest form

Answer 1

$\bf 45\cdot 2\implies 90\qquad thus\implies \stackrel{\textit{simplest form}}{\cfrac{90}{2}}\implies 45$

so-called "improper fraction" form as well.

Answer 2

45 1/2
Take 2*45 and add 1
91/2