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Mathematics 15 Online
OpenStudy (anonymous):

What is 9/10 + 9?

OpenStudy (anonymous):

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

OpenStudy (anonymous):

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

OpenStudy (anonymous):

that's better

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