Tīpoka ki ngā ihirangi matua
Whakaoti mō x_n
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Tohaina

\frac{171}{57}=x_{n}
Whakawehea ngā taha e rua ki te 57.
3=x_{n}
Whakawehea te 171 ki te 57, kia riro ko 3.
x_{n}=3
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.