Whakaoti mō x
x=\frac{2\left(y+2\right)}{7}
Whakaoti mō y
y=\frac{7x}{2}-2
Graph
Tohaina
Kua tāruatia ki te papatopenga
7x=4+2y
Me tāpiri te 2y ki ngā taha e rua.
7x=2y+4
He hanga arowhānui tō te whārite.
\frac{7x}{7}=\frac{2y+4}{7}
Whakawehea ngā taha e rua ki te 7.
x=\frac{2y+4}{7}
Mā te whakawehe ki te 7 ka wetekia te whakareanga ki te 7.
-2y=4-7x
Tangohia te 7x mai i ngā taha e rua.
\frac{-2y}{-2}=\frac{4-7x}{-2}
Whakawehea ngā taha e rua ki te -2.
y=\frac{4-7x}{-2}
Mā te whakawehe ki te -2 ka wetekia te whakareanga ki te -2.
y=\frac{7x}{2}-2
Whakawehe 4-7x ki te -2.
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