Whakaoti mō x
x=-\frac{y}{2}+100
Whakaoti mō y
y=200-2x
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x=200-y
Tāpirihia te 20 ki te 180, ka 200.
\frac{2x}{2}=\frac{200-y}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{200-y}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
x=-\frac{y}{2}+100
Whakawehe 200-y ki te 2.
2x=200-y
Tāpirihia te 20 ki te 180, ka 200.
200-y=2x
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
-y=2x-200
Tangohia te 200 mai i ngā taha e rua.
\frac{-y}{-1}=\frac{2x-200}{-1}
Whakawehea ngā taha e rua ki te -1.
y=\frac{2x-200}{-1}
Mā te whakawehe ki te -1 ka wetekia te whakareanga ki te -1.
y=200-2x
Whakawehe -200+2x ki te -1.
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