Answer :

Exvited
[tex] \frac{1}{6} +(- \frac{7}{9} ) \\ \\ \frac{1}{6} - \frac{7}{9} \\ \\ - \frac{11}{18} \\ \\ Answer: \fbox {-11/18} \ or \ \fbox {-0.6111}[/tex]

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