Whakaoti mō x
x=-\frac{5y}{2}+20
Whakaoti mō y
y=-\frac{2x}{5}+8
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x=40-5y
Tangohia te 5y mai i ngā taha e rua.
\frac{2x}{2}=\frac{40-5y}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{40-5y}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
x=-\frac{5y}{2}+20
Whakawehe 40-5y ki te 2.
5y=40-2x
Tangohia te 2x mai i ngā taha e rua.
\frac{5y}{5}=\frac{40-2x}{5}
Whakawehea ngā taha e rua ki te 5.
y=\frac{40-2x}{5}
Mā te whakawehe ki te 5 ka wetekia te whakareanga ki te 5.
y=-\frac{2x}{5}+8
Whakawehe 40-2x ki te 5.
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