Whakaoti mō x
x=-\frac{7y}{3}+7
Whakaoti mō y
y=-\frac{3x}{7}+3
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x-21=-7y
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
3x=-7y+21
Me tāpiri te 21 ki ngā taha e rua.
3x=21-7y
He hanga arowhānui tō te whārite.
\frac{3x}{3}=\frac{21-7y}{3}
Whakawehea ngā taha e rua ki te 3.
x=\frac{21-7y}{3}
Mā te whakawehe ki te 3 ka wetekia te whakareanga ki te 3.
x=-\frac{7y}{3}+7
Whakawehe -7y+21 ki te 3.
-7y=3x-21
He hanga arowhānui tō te whārite.
\frac{-7y}{-7}=\frac{3x-21}{-7}
Whakawehea ngā taha e rua ki te -7.
y=\frac{3x-21}{-7}
Mā te whakawehe ki te -7 ka wetekia te whakareanga ki te -7.
y=-\frac{3x}{7}+3
Whakawehe -21+3x ki te -7.
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