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

Tohaina

18x=90\times 2
Me whakarea ngā taha e rua ki te 2.
18x=180
Whakareatia te 90 ki te 2, ka 180.
x=\frac{180}{18}
Whakawehea ngā taha e rua ki te 18.
x=10
Whakawehea te 180 ki te 18, kia riro ko 10.