Whakaoti mō y
y=4
Graph
Tohaina
Kua tāruatia ki te papatopenga
y\times \frac{5}{\frac{5}{3}}+8=5y
Tē taea kia ōrite te tāupe y ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te y.
y\times 5\times \frac{3}{5}+8=5y
Whakawehe 5 ki te \frac{5}{3} mā te whakarea 5 ki te tau huripoki o \frac{5}{3}.
y\times 3+8=5y
Me whakakore te 5 me te 5.
y\times 3+8-5y=0
Tangohia te 5y mai i ngā taha e rua.
-2y+8=0
Pahekotia te y\times 3 me -5y, ka -2y.
-2y=-8
Tangohia te 8 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
y=\frac{-8}{-2}
Whakawehea ngā taha e rua ki te -2.
y=4
Whakawehea te -8 ki te -2, kia riro ko 4.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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