Whakaoti mō x
x=\frac{90-2y}{11}
Whakaoti mō y
y=-\frac{11x}{2}+45
Graph
Tohaina
Kua tāruatia ki te papatopenga
11x=90-2y
Tangohia te 2y mai i ngā taha e rua.
\frac{11x}{11}=\frac{90-2y}{11}
Whakawehea ngā taha e rua ki te 11.
x=\frac{90-2y}{11}
Mā te whakawehe ki te 11 ka wetekia te whakareanga ki te 11.
2y=90-11x
Tangohia te 11x mai i ngā taha e rua.
\frac{2y}{2}=\frac{90-11x}{2}
Whakawehea ngā taha e rua ki te 2.
y=\frac{90-11x}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
y=-\frac{11x}{2}+45
Whakawehe 90-11x ki te 2.
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