Tīpoka ki ngā ihirangi matua
Whakaoti mō x
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Tohaina

x-180+x\times 3=810
Whakareatia te 60 ki te 3, ka 180.
4x-180=810
Pahekotia te x me x\times 3, ka 4x.
4x=810+180
Me tāpiri te 180 ki ngā taha e rua.
4x=990
Tāpirihia te 810 ki te 180, ka 990.
x=\frac{990}{4}
Whakawehea ngā taha e rua ki te 4.
x=\frac{495}{2}
Whakahekea te hautanga \frac{990}{4} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.