Whakaoti mō x
x=\frac{2\left(y-9\right)}{7}
Whakaoti mō y
y=\frac{7x}{2}+9
Graph
Tohaina
Kua tāruatia ki te papatopenga
-7x=18-2y
Tangohia te 2y mai i ngā taha e rua.
\frac{-7x}{-7}=\frac{18-2y}{-7}
Whakawehea ngā taha e rua ki te -7.
x=\frac{18-2y}{-7}
Mā te whakawehe ki te -7 ka wetekia te whakareanga ki te -7.
x=\frac{2y-18}{7}
Whakawehe 18-2y ki te -7.
2y=18+7x
Me tāpiri te 7x ki ngā taha e rua.
2y=7x+18
He hanga arowhānui tō te whārite.
\frac{2y}{2}=\frac{7x+18}{2}
Whakawehea ngā taha e rua ki te 2.
y=\frac{7x+18}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
y=\frac{7x}{2}+9
Whakawehe 18+7x ki te 2.
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