Tīpoka ki ngā ihirangi matua
Whakaoti mō y
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Whakaoti mō x
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Graph

Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

y+20=x
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
y=x-20
Tangohia te 20 mai i ngā taha e rua.