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Tohaina

13-3z-8z=2
Tangohia te 8z mai i ngā taha e rua.
13-11z=2
Pahekotia te -3z me -8z, ka -11z.
-11z=2-13
Tangohia te 13 mai i ngā taha e rua.
-11z=-11
Tangohia te 13 i te 2, ka -11.
z=\frac{-11}{-11}
Whakawehea ngā taha e rua ki te -11.
z=1
Whakawehea te -11 ki te -11, kia riro ko 1.