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

Tohaina

x+18=-15
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x=-15-18
Tangohia te 18 mai i ngā taha e rua.
x=-33
Tangohia te 18 i te -15, ka -33.