Whakaoti mō x
x=-\frac{2y}{3}+7
Whakaoti mō y
y=\frac{21-3x}{2}
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x=21-2y
Tangohia te 2y mai i ngā taha e rua.
\frac{3x}{3}=\frac{21-2y}{3}
Whakawehea ngā taha e rua ki te 3.
x=\frac{21-2y}{3}
Mā te whakawehe ki te 3 ka wetekia te whakareanga ki te 3.
x=-\frac{2y}{3}+7
Whakawehe 21-2y ki te 3.
2y=21-3x
Tangohia te 3x mai i ngā taha e rua.
\frac{2y}{2}=\frac{21-3x}{2}
Whakawehea ngā taha e rua ki te 2.
y=\frac{21-3x}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
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