Whakaoti mō x
x=4\left(y+5\right)
Whakaoti mō y
y=\frac{x-20}{4}
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x+20=8y+60
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
2x=8y+60-20
Tangohia te 20 mai i ngā taha e rua.
2x=8y+40
Tangohia te 20 i te 60, ka 40.
\frac{2x}{2}=\frac{8y+40}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{8y+40}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
x=4y+20
Whakawehe 40+8y ki te 2.
8y=2x+20-60
Tangohia te 60 mai i ngā taha e rua.
8y=2x-40
Tangohia te 60 i te 20, ka -40.
\frac{8y}{8}=\frac{2x-40}{8}
Whakawehea ngā taha e rua ki te 8.
y=\frac{2x-40}{8}
Mā te whakawehe ki te 8 ka wetekia te whakareanga ki te 8.
y=\frac{x}{4}-5
Whakawehe -40+2x ki te 8.
Ngā Tauira
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