Whakaoti mō z
z=30
Tohaina
Kua tāruatia ki te papatopenga
15z=450
Pahekotia te 7z me 8z, ka 15z.
z=\frac{450}{15}
Whakawehea ngā taha e rua ki te 15.
z=30
Whakawehea te 450 ki te 15, kia riro ko 30.
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