Whakaoti mō x
x=-\frac{y}{2}+5
Whakaoti mō y
y=10-2x
Graph
Tohaina
Kua tāruatia ki te papatopenga
20x+10y=100
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
20x=100-10y
Tangohia te 10y mai i ngā taha e rua.
\frac{20x}{20}=\frac{100-10y}{20}
Whakawehea ngā taha e rua ki te 20.
x=\frac{100-10y}{20}
Mā te whakawehe ki te 20 ka wetekia te whakareanga ki te 20.
x=-\frac{y}{2}+5
Whakawehe 100-10y ki te 20.
20x+10y=100
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
10y=100-20x
Tangohia te 20x mai i ngā taha e rua.
\frac{10y}{10}=\frac{100-20x}{10}
Whakawehea ngā taha e rua ki te 10.
y=\frac{100-20x}{10}
Mā te whakawehe ki te 10 ka wetekia te whakareanga ki te 10.
y=10-2x
Whakawehe 100-20x ki te 10.
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