Whakaoti mō n
n=\frac{a_{n}-5}{4}
Whakaoti mō a_n
a_{n}=4n+5
Tohaina
Kua tāruatia ki te papatopenga
4n+5=a_{n}
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
4n=a_{n}-5
Tangohia te 5 mai i ngā taha e rua.
\frac{4n}{4}=\frac{a_{n}-5}{4}
Whakawehea ngā taha e rua ki te 4.
n=\frac{a_{n}-5}{4}
Mā te whakawehe ki te 4 ka wetekia te whakareanga ki te 4.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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