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Whakaoti mō x
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Tohaina

10000=x\left(1+\frac{8}{400}\right)^{20}
Whakarohaina te \frac{0.08}{4} mā te whakarea i te taurunga me te tauraro ki te 100.
10000=x\left(1+\frac{1}{50}\right)^{20}
Whakahekea te hautanga \frac{8}{400} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 8.
10000=x\times \left(\frac{51}{50}\right)^{20}
Tāpirihia te 1 ki te \frac{1}{50}, ka \frac{51}{50}.
10000=x\times \frac{14171098670753043575626125424226001}{9536743164062500000000000000000000}
Tātaihia te \frac{51}{50} mā te pū o 20, kia riro ko \frac{14171098670753043575626125424226001}{9536743164062500000000000000000000}.
x\times \frac{14171098670753043575626125424226001}{9536743164062500000000000000000000}=10000
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x=10000\times \frac{9536743164062500000000000000000000}{14171098670753043575626125424226001}
Me whakarea ngā taha e rua ki te \frac{9536743164062500000000000000000000}{14171098670753043575626125424226001}, te tau utu o \frac{14171098670753043575626125424226001}{9536743164062500000000000000000000}.
x=\frac{95367431640625000000000000000000000000}{14171098670753043575626125424226001}
Whakareatia te 10000 ki te \frac{9536743164062500000000000000000000}{14171098670753043575626125424226001}, ka \frac{95367431640625000000000000000000000000}{14171098670753043575626125424226001}.