Whakaoti mō x
x=\frac{y+40}{2}
Whakaoti mō y
y=2\left(x-20\right)
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x-40=y
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
2x=y+40
Me tāpiri te 40 ki ngā taha e rua.
\frac{2x}{2}=\frac{y+40}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{y+40}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
x=\frac{y}{2}+20
Whakawehe y+40 ki te 2.
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