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