Tīpoka ki ngā ihirangi matua
Aromātai
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Tauwehe
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

320-\frac{300}{20}
Tangohia te 58 i te 78, ka 20.
320-15
Whakawehea te 300 ki te 20, kia riro ko 15.
305
Tangohia te 15 i te 320, ka 305.