Whakaoti mō x
x=-\frac{y}{2}+15
Whakaoti mō y
y=30-2x
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x=30-y
Tangohia te y mai i ngā taha e rua.
\frac{2x}{2}=\frac{30-y}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{30-y}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
x=-\frac{y}{2}+15
Whakawehe 30-y ki te 2.
y=30-2x
Tangohia te 2x mai i ngā taha e rua.
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