Whakaoti mō z
z=15
Tohaina
Kua tāruatia ki te papatopenga
-10z+75+5z=0
Me tāpiri te 5z ki ngā taha e rua.
-5z+75=0
Pahekotia te -10z me 5z, ka -5z.
-5z=-75
Tangohia te 75 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
z=\frac{-75}{-5}
Whakawehea ngā taha e rua ki te -5.
z=15
Whakawehea te -75 ki te -5, kia riro ko 15.
Ngā Tauira
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