Whakaoti mō x
x=\frac{8-2y}{9}
Whakaoti mō y
y=-\frac{9x}{2}+4
Graph
Tohaina
Kua tāruatia ki te papatopenga
9x=8-2y
Tangohia te 2y mai i ngā taha e rua.
\frac{9x}{9}=\frac{8-2y}{9}
Whakawehea ngā taha e rua ki te 9.
x=\frac{8-2y}{9}
Mā te whakawehe ki te 9 ka wetekia te whakareanga ki te 9.
2y=8-9x
Tangohia te 9x mai i ngā taha e rua.
\frac{2y}{2}=\frac{8-9x}{2}
Whakawehea ngā taha e rua ki te 2.
y=\frac{8-9x}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
y=-\frac{9x}{2}+4
Whakawehe 8-9x ki te 2.
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