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Whakaoti mō d
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Tautapa d
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Tohaina

d=\frac{27}{490}\times 2500
Tātaihia te 50 mā te pū o 2, kia riro ko 2500.
d=\frac{27\times 2500}{490}
Tuhia te \frac{27}{490}\times 2500 hei hautanga kotahi.
d=\frac{67500}{490}
Whakareatia te 27 ki te 2500, ka 67500.
d=\frac{6750}{49}
Whakahekea te hautanga \frac{67500}{490} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 10.