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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

30y-13>2\times 7
Me whakarea ngā taha e rua ki te 7. I te mea he tōrunga te 7, kāore e huri te ahunga koreōrite.
30y-13>14
Whakareatia te 2 ki te 7, ka 14.
30y>14+13
Me tāpiri te 13 ki ngā taha e rua.
30y>27
Tāpirihia te 14 ki te 13, ka 27.
y>\frac{27}{30}
Whakawehea ngā taha e rua ki te 30. I te mea he tōrunga te 30, kāore e huri te ahunga koreōrite.
y>\frac{9}{10}
Whakahekea te hautanga \frac{27}{30} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.