Whakaoti mō x
x=10-4y
Whakaoti mō y
y=-\frac{x}{4}+\frac{5}{2}
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x=20-8y
Tangohia te 8y mai i ngā taha e rua.
\frac{2x}{2}=\frac{20-8y}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{20-8y}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
x=10-4y
Whakawehe 20-8y ki te 2.
8y=20-2x
Tangohia te 2x mai i ngā taha e rua.
\frac{8y}{8}=\frac{20-2x}{8}
Whakawehea ngā taha e rua ki te 8.
y=\frac{20-2x}{8}
Mā te whakawehe ki te 8 ka wetekia te whakareanga ki te 8.
y=-\frac{x}{4}+\frac{5}{2}
Whakawehe 20-2x ki te 8.
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