Whakaoti mō x
x=-\frac{7y}{5}+21
Whakaoti mō y
y=-\frac{5x}{7}+15
Graph
Tohaina
Kua tāruatia ki te papatopenga
5x=105-7y
Tangohia te 7y mai i ngā taha e rua.
\frac{5x}{5}=\frac{105-7y}{5}
Whakawehea ngā taha e rua ki te 5.
x=\frac{105-7y}{5}
Mā te whakawehe ki te 5 ka wetekia te whakareanga ki te 5.
x=-\frac{7y}{5}+21
Whakawehe 105-7y ki te 5.
7y=105-5x
Tangohia te 5x mai i ngā taha e rua.
\frac{7y}{7}=\frac{105-5x}{7}
Whakawehea ngā taha e rua ki te 7.
y=\frac{105-5x}{7}
Mā te whakawehe ki te 7 ka wetekia te whakareanga ki te 7.
y=-\frac{5x}{7}+15
Whakawehe 105-5x ki te 7.
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