Whakaoti mō z
z=7
Tohaina
Kua tāruatia ki te papatopenga
7z+5=54
Pahekotia te 9z me -2z, ka 7z.
7z=54-5
Tangohia te 5 mai i ngā taha e rua.
7z=49
Tangohia te 5 i te 54, ka 49.
z=\frac{49}{7}
Whakawehea ngā taha e rua ki te 7.
z=7
Whakawehea te 49 ki te 7, kia riro ko 7.
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