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Whakaoti mō z
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Tohaina

\frac{3}{5}z=-2-4
Tangohia te 4 mai i ngā taha e rua.
\frac{3}{5}z=-6
Tangohia te 4 i te -2, ka -6.
z=-6\times \frac{5}{3}
Me whakarea ngā taha e rua ki te \frac{5}{3}, te tau utu o \frac{3}{5}.
z=\frac{-6\times 5}{3}
Tuhia te -6\times \frac{5}{3} hei hautanga kotahi.
z=\frac{-30}{3}
Whakareatia te -6 ki te 5, ka -30.
z=-10
Whakawehea te -30 ki te 3, kia riro ko -10.