Tīpoka ki ngā ihirangi matua
Whakaoti mō x
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Tohaina

100x-70=130
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
100x=130+70
Me tāpiri te 70 ki ngā taha e rua.
100x=200
Tāpirihia te 130 ki te 70, ka 200.
x=\frac{200}{100}
Whakawehea ngā taha e rua ki te 100.
x=2
Whakawehea te 200 ki te 100, kia riro ko 2.