Whakaoti mō p
p=100
Tohaina
Kua tāruatia ki te papatopenga
50000-150p-250p=10000
Tangohia te 250p mai i ngā taha e rua.
50000-400p=10000
Pahekotia te -150p me -250p, ka -400p.
-400p=10000-50000
Tangohia te 50000 mai i ngā taha e rua.
-400p=-40000
Tangohia te 50000 i te 10000, ka -40000.
p=\frac{-40000}{-400}
Whakawehea ngā taha e rua ki te -400.
p=100
Whakawehea te -40000 ki te -400, kia riro ko 100.
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