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Tohaina

7n\geq -85-6
Tangohia te 6 mai i ngā taha e rua.
7n\geq -91
Tangohia te 6 i te -85, ka -91.
n\geq \frac{-91}{7}
Whakawehea ngā taha e rua ki te 7. I te mea he tōrunga te 7, kāore e huri te ahunga koreōrite.
n\geq -13
Whakawehea te -91 ki te 7, kia riro ko -13.