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Whakaoti mō z
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

-7-10z>20-13z
Tangohia te 8 i te 1, ka -7.
-7-10z+13z>20
Me tāpiri te 13z ki ngā taha e rua.
-7+3z>20
Pahekotia te -10z me 13z, ka 3z.
3z>20+7
Me tāpiri te 7 ki ngā taha e rua.
3z>27
Tāpirihia te 20 ki te 7, ka 27.
z>\frac{27}{3}
Whakawehea ngā taha e rua ki te 3. I te mea he tōrunga te 3, kāore e huri te ahunga koreōrite.
z>9
Whakawehea te 27 ki te 3, kia riro ko 9.