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

Tohaina

4x-2x=20
Tangohia te 2x mai i ngā taha e rua.
2x=20
Pahekotia te 4x me -2x, ka 2x.
x=\frac{20}{2}
Whakawehea ngā taha e rua ki te 2.
x=10
Whakawehea te 20 ki te 2, kia riro ko 10.