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

Tohaina

4x<19-3
Tangohia te 3 mai i ngā taha e rua.
4x<16
Tangohia te 3 i te 19, ka 16.
x<\frac{16}{4}
Whakawehea ngā taha e rua ki te 4. I te mea he tōrunga te 4, kāore e huri te ahunga koreōrite.
x<4
Whakawehea te 16 ki te 4, kia riro ko 4.