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Whakaoti mō x
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Whakaoti mō y
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Tohaina

7x\times 9=100y
Whakareatia ngā taha e rua o te whārite ki te 4.
63x=100y
Whakareatia te 7 ki te 9, ka 63.
\frac{63x}{63}=\frac{100y}{63}
Whakawehea ngā taha e rua ki te 63.
x=\frac{100y}{63}
Mā te whakawehe ki te 63 ka wetekia te whakareanga ki te 63.
7x\times 9=100y
Whakareatia ngā taha e rua o te whārite ki te 4.
63x=100y
Whakareatia te 7 ki te 9, ka 63.
100y=63x
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
\frac{100y}{100}=\frac{63x}{100}
Whakawehea ngā taha e rua ki te 100.
y=\frac{63x}{100}
Mā te whakawehe ki te 100 ka wetekia te whakareanga ki te 100.