Whakaoti mō x
x=20-2y
Whakaoti mō y
y=-\frac{x}{2}+10
Graph
Tohaina
Kua tāruatia ki te papatopenga
\frac{-x}{2}+10=y
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
\frac{-x}{2}=y-10
Tangohia te 10 mai i ngā taha e rua.
-x=2y-20
Whakareatia ngā taha e rua o te whārite ki te 2.
\frac{-x}{-1}=\frac{2y-20}{-1}
Whakawehea ngā taha e rua ki te -1.
x=\frac{2y-20}{-1}
Mā te whakawehe ki te -1 ka wetekia te whakareanga ki te -1.
x=20-2y
Whakawehe -20+2y ki te -1.
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