Tīpoka ki ngā ihirangi matua
Whakaoti mō x_2
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Whakaoti mō y
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

y=x_{2}-16
Tātaihia te 4 mā te pū o 2, kia riro ko 16.
x_{2}-16=y
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x_{2}=y+16
Me tāpiri te 16 ki ngā taha e rua.
y=x_{2}-16
Tātaihia te 4 mā te pū o 2, kia riro ko 16.