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A= [tex] \frac{9}{6} - \frac{2}{6} : \frac{9}{12} + \frac{8}{12} [/tex]
= [tex] \frac{7}{6} [/tex] : [tex] \frac{17}{12} [/tex]
= [tex] \frac{7}{6} * \frac{12}{17} [/tex]
= [tex] \frac{14}{17} [/tex]
= [tex] \frac{7}{6} [/tex] : [tex] \frac{17}{12} [/tex]
= [tex] \frac{7}{6} * \frac{12}{17} [/tex]
= [tex] \frac{14}{17} [/tex]