Question

What is 9/10 + 9?

Answer 1

9/10+9/1
LCD=10
(9+90)/10=99/10=9.9

Answer 2

\[\frac{9}{10}+9=\frac{9}{10}+\frac{9}{1}=\frac{9}{10}+\frac{10\times 10}{10\times 1}=\frac{9+90}{10}=\frac{99}{10}\]

Answer 3

that's better