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Whakaoti mō x
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Tohaina

\frac{18}{x}=\frac{36.5}{100}
Whakawehea ngā taha e rua ki te 100.
\frac{18}{x}=\frac{365}{1000}
Whakarohaina te \frac{36.5}{100} mā te whakarea i te taurunga me te tauraro ki te 10.
\frac{18}{x}=\frac{73}{200}
Whakahekea te hautanga \frac{365}{1000} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.
200\times 18=73x
Tē taea kia ōrite te tāupe x ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te 200x, arā, te tauraro pātahi he tino iti rawa te kitea o x,200.
3600=73x
Whakareatia te 200 ki te 18, ka 3600.
73x=3600
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x=\frac{3600}{73}
Whakawehea ngā taha e rua ki te 73.