Whakaoti mō x
x=\frac{20y+8}{3}
Whakaoti mō y
y=\frac{3x}{20}-\frac{2}{5}
Graph
Tohaina
Kua tāruatia ki te papatopenga
3x+2y+7-6x=-18y-1
Tangohia te 6x mai i ngā taha e rua.
-3x+2y+7=-18y-1
Pahekotia te 3x me -6x, ka -3x.
-3x+7=-18y-1-2y
Tangohia te 2y mai i ngā taha e rua.
-3x+7=-20y-1
Pahekotia te -18y me -2y, ka -20y.
-3x=-20y-1-7
Tangohia te 7 mai i ngā taha e rua.
-3x=-20y-8
Tangohia te 7 i te -1, ka -8.
\frac{-3x}{-3}=\frac{-20y-8}{-3}
Whakawehea ngā taha e rua ki te -3.
x=\frac{-20y-8}{-3}
Mā te whakawehe ki te -3 ka wetekia te whakareanga ki te -3.
x=\frac{20y+8}{3}
Whakawehe -20y-8 ki te -3.
3x+2y+7+18y=6x-1
Me tāpiri te 18y ki ngā taha e rua.
3x+20y+7=6x-1
Pahekotia te 2y me 18y, ka 20y.
20y+7=6x-1-3x
Tangohia te 3x mai i ngā taha e rua.
20y+7=3x-1
Pahekotia te 6x me -3x, ka 3x.
20y=3x-1-7
Tangohia te 7 mai i ngā taha e rua.
20y=3x-8
Tangohia te 7 i te -1, ka -8.
\frac{20y}{20}=\frac{3x-8}{20}
Whakawehea ngā taha e rua ki te 20.
y=\frac{3x-8}{20}
Mā te whakawehe ki te 20 ka wetekia te whakareanga ki te 20.
y=\frac{3x}{20}-\frac{2}{5}
Whakawehe 3x-8 ki te 20.
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