Whakaoti mō x
x=\frac{7\left(y+3\right)}{4}
Whakaoti mō y
y=\frac{4x}{7}-3
Graph
Tohaina
Kua tāruatia ki te papatopenga
4x=21+7y
Me tāpiri te 7y ki ngā taha e rua.
4x=7y+21
He hanga arowhānui tō te whārite.
\frac{4x}{4}=\frac{7y+21}{4}
Whakawehea ngā taha e rua ki te 4.
x=\frac{7y+21}{4}
Mā te whakawehe ki te 4 ka wetekia te whakareanga ki te 4.
-7y=21-4x
Tangohia te 4x mai i ngā taha e rua.
\frac{-7y}{-7}=\frac{21-4x}{-7}
Whakawehea ngā taha e rua ki te -7.
y=\frac{21-4x}{-7}
Mā te whakawehe ki te -7 ka wetekia te whakareanga ki te -7.
y=\frac{4x}{7}-3
Whakawehe 21-4x ki te -7.
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