Whakaoti mō y
y=9
Graph
Tohaina
Kua tāruatia ki te papatopenga
-18=-3y+9
Pahekotia te 7y me -10y, ka -3y.
-3y+9=-18
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
-3y=-18-9
Tangohia te 9 mai i ngā taha e rua.
-3y=-27
Tangohia te 9 i te -18, ka -27.
y=\frac{-27}{-3}
Whakawehea ngā taha e rua ki te -3.
y=9
Whakawehea te -27 ki te -3, kia riro ko 9.
Ngā Tauira
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Āhuahanga
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Poukapa
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Whakarerekētanga
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Whakaurunga
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Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}