Whakaoti mō y
y=\frac{2}{3}\approx 0.666666667
Graph
Tohaina
Kua tāruatia ki te papatopenga
8=3\left(7y-2\right)
Tē taea kia ōrite te tāupe y ki \frac{2}{7} nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te 7y-2.
8=21y-6
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 7y-2.
21y-6=8
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
21y=8+6
Me tāpiri te 6 ki ngā taha e rua.
21y=14
Tāpirihia te 8 ki te 6, ka 14.
y=\frac{14}{21}
Whakawehea ngā taha e rua ki te 21.
y=\frac{2}{3}
Whakahekea te hautanga \frac{14}{21} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 7.
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