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

Tohaina

8+x=7
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x=7-8
Tangohia te 8 mai i ngā taha e rua.
x=-1
Tangohia te 8 i te 7, ka -1.