Tīpoka ki ngā ihirangi matua
Whakaoti mō t
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

t<-4+4
Me tāpiri te 4 ki ngā taha e rua.
t<0
Tāpirihia te -4 ki te 4, ka 0.