[tex] \frac{246-24}{90}= \frac{222}{90}= \frac{37}{15}
\frac{3466-34}{990}= \frac{3432}{990}= \frac{572}{165}
[tex] \frac{55-5}{9}= \frac{50}{9} [/tex]
[tex] \frac{1221+1716+2750}{495}= \frac{5687}{495}= \frac{517}{45} [/tex]
[tex] \frac{517}{45}: \frac{2}{1}= \frac{517}{45}* \frac{1}{2}= \frac{517}{90}=5.7(4) [/tex]