Whakaoti mō x
x=\frac{15-7y}{4}
Whakaoti mō y
y=\frac{15-4x}{7}
Graph
Tohaina
Kua tāruatia ki te papatopenga
4x=15-7y
Tangohia te 7y mai i ngā taha e rua.
\frac{4x}{4}=\frac{15-7y}{4}
Whakawehea ngā taha e rua ki te 4.
x=\frac{15-7y}{4}
Mā te whakawehe ki te 4 ka wetekia te whakareanga ki te 4.
7y=15-4x
Tangohia te 4x mai i ngā taha e rua.
\frac{7y}{7}=\frac{15-4x}{7}
Whakawehea ngā taha e rua ki te 7.
y=\frac{15-4x}{7}
Mā te whakawehe ki te 7 ka wetekia te whakareanga ki te 7.
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