Whakaoti mō x
x=\frac{y-30}{2}
Whakaoti mō y
y=2\left(x+15\right)
Graph
Tohaina
Kua tāruatia ki te papatopenga
-4x+2y=60
Pahekotia te x me -5x, ka -4x.
-4x=60-2y
Tangohia te 2y mai i ngā taha e rua.
\frac{-4x}{-4}=\frac{60-2y}{-4}
Whakawehea ngā taha e rua ki te -4.
x=\frac{60-2y}{-4}
Mā te whakawehe ki te -4 ka wetekia te whakareanga ki te -4.
x=\frac{y}{2}-15
Whakawehe 60-2y ki te -4.
-4x+2y=60
Pahekotia te x me -5x, ka -4x.
2y=60+4x
Me tāpiri te 4x ki ngā taha e rua.
2y=4x+60
He hanga arowhānui tō te whārite.
\frac{2y}{2}=\frac{4x+60}{2}
Whakawehea ngā taha e rua ki te 2.
y=\frac{4x+60}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
y=2x+30
Whakawehe 60+4x ki te 2.
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