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Whakaoti mō x
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Tohaina

10+3x=225
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
3x=225-10
Tangohia te 10 mai i ngā taha e rua.
3x=215
Tangohia te 10 i te 225, ka 215.
x=\frac{215}{3}
Whakawehea ngā taha e rua ki te 3.