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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

-2a<20-3
Tangohia te 3 mai i ngā taha e rua.
-2a<17
Tangohia te 3 i te 20, ka 17.
a>-\frac{17}{2}
Whakawehea ngā taha e rua ki te -2. I te mea he tōraro a -2, ka huri te ahunga koreōrite.