Whakaoti mō y
y=\frac{7}{22}\approx 0.318181818
Graph
Tohaina
Kua tāruatia ki te papatopenga
3\left(6y-5\right)=\left(y+2\right)\left(-4\right)
Tē taea kia ōrite te tāupe y ki -2 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te 3\left(y+2\right), arā, te tauraro pātahi he tino iti rawa te kitea o y+2,3.
18y-15=\left(y+2\right)\left(-4\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 3 ki te 6y-5.
18y-15=-4y-8
Whakamahia te āhuatanga tohatoha hei whakarea te y+2 ki te -4.
18y-15+4y=-8
Me tāpiri te 4y ki ngā taha e rua.
22y-15=-8
Pahekotia te 18y me 4y, ka 22y.
22y=-8+15
Me tāpiri te 15 ki ngā taha e rua.
22y=7
Tāpirihia te -8 ki te 15, ka 7.
y=\frac{7}{22}
Whakawehea ngā taha e rua ki te 22.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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