Tīpoka ki ngā ihirangi matua
Whakaoti mō x_2
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Tohaina

36=x_{2}
Tāpirihia te 31 ki te 5, ka 36.
x_{2}=36
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.