Whakaoti mō x
x=\frac{A-10}{2}
Whakaoti mō A
A=2\left(x+5\right)
Graph
Tohaina
Kua tāruatia ki te papatopenga
A=10+2x
Tāpirihia te 3 ki te 7, ka 10.
10+2x=A
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
2x=A-10
Tangohia te 10 mai i ngā taha e rua.
\frac{2x}{2}=\frac{A-10}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{A-10}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
x=\frac{A}{2}-5
Whakawehe A-10 ki te 2.
A=10+2x
Tāpirihia te 3 ki te 7, ka 10.
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