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

Tohaina

-13+21+9-12
Ko te tauaro o -21 ko 21.
8+9-12
Tāpirihia te -13 ki te 21, ka 8.
17-12
Tāpirihia te 8 ki te 9, ka 17.
5
Tangohia te 12 i te 17, ka 5.