Whakaoti mō n
n=7
Tohaina
Kua tāruatia ki te papatopenga
3\times 4n=2\left(5n+7\right)
Tē taea kia ōrite te tāupe n ki -\frac{7}{5} nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te 3\left(5n+7\right), arā, te tauraro pātahi he tino iti rawa te kitea o 5n+7,3.
12n=2\left(5n+7\right)
Whakareatia te 3 ki te 4, ka 12.
12n=10n+14
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 5n+7.
12n-10n=14
Tangohia te 10n mai i ngā taha e rua.
2n=14
Pahekotia te 12n me -10n, ka 2n.
n=\frac{14}{2}
Whakawehea ngā taha e rua ki te 2.
n=7
Whakawehea te 14 ki te 2, kia riro ko 7.
Ngā Tauira
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