Whakaoti mō x
x=40
Graph
Tohaina
Kua tāruatia ki te papatopenga
841-21^{2}=10x
Tātaihia te 29 mā te pū o 2, kia riro ko 841.
841-441=10x
Tātaihia te 21 mā te pū o 2, kia riro ko 441.
400=10x
Tangohia te 441 i te 841, ka 400.
10x=400
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x=\frac{400}{10}
Whakawehea ngā taha e rua ki te 10.
x=40
Whakawehea te 400 ki te 10, kia riro ko 40.
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