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

Tohaina

2.5-\left(-2\right)
Whakareatia te 1 ki te -2, ka -2.
2.5+2
Ko te tauaro o -2 ko 2.
4.5
Tāpirihia te 2.5 ki te 2, ka 4.5.