Whakaoti mō y
y=2
Graph
Tohaina
Kua tāruatia ki te papatopenga
\frac{90}{15}=2y+2
Whakawehea ngā taha e rua ki te 15.
6=2y+2
Whakawehea te 90 ki te 15, kia riro ko 6.
2y+2=6
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
2y=6-2
Tangohia te 2 mai i ngā taha e rua.
2y=4
Tangohia te 2 i te 6, ka 4.
y=\frac{4}{2}
Whakawehea ngā taha e rua ki te 2.
y=2
Whakawehea te 4 ki te 2, kia riro ko 2.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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