Whakaoti mō y
y = \frac{7}{2} = 3\frac{1}{2} = 3.5
Graph
Tohaina
Kua tāruatia ki te papatopenga
12=8\left(y-2\right)
Tē taea kia ōrite te tāupe y ki 2 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te y-2.
12=8y-16
Whakamahia te āhuatanga tohatoha hei whakarea te 8 ki te y-2.
8y-16=12
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
8y=12+16
Me tāpiri te 16 ki ngā taha e rua.
8y=28
Tāpirihia te 12 ki te 16, ka 28.
y=\frac{28}{8}
Whakawehea ngā taha e rua ki te 8.
y=\frac{7}{2}
Whakahekea te hautanga \frac{28}{8} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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