Whakaoti mō A
A=7\left(n-5\right)
Whakaoti mō n
n=\frac{A+35}{7}
Tohaina
Kua tāruatia ki te papatopenga
2n+5n-35=A
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te n-7.
7n-35=A
Pahekotia te 2n me 5n, ka 7n.
A=7n-35
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
2n+5n-35=A
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te n-7.
7n-35=A
Pahekotia te 2n me 5n, ka 7n.
7n=A+35
Me tāpiri te 35 ki ngā taha e rua.
\frac{7n}{7}=\frac{A+35}{7}
Whakawehea ngā taha e rua ki te 7.
n=\frac{A+35}{7}
Mā te whakawehe ki te 7 ka wetekia te whakareanga ki te 7.
n=\frac{A}{7}+5
Whakawehe A+35 ki te 7.
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