Whakaoti mō x
x=-\frac{y}{7}-1
Whakaoti mō y
y=-7x-7
Graph
Tohaina
Kua tāruatia ki te papatopenga
8x+7=2x-x-y
Pahekotia te 9x me -x, ka 8x.
8x+7=x-y
Pahekotia te 2x me -x, ka x.
8x+7-x=-y
Tangohia te x mai i ngā taha e rua.
7x+7=-y
Pahekotia te 8x me -x, ka 7x.
7x=-y-7
Tangohia te 7 mai i ngā taha e rua.
\frac{7x}{7}=\frac{-y-7}{7}
Whakawehea ngā taha e rua ki te 7.
x=\frac{-y-7}{7}
Mā te whakawehe ki te 7 ka wetekia te whakareanga ki te 7.
x=-\frac{y}{7}-1
Whakawehe -y-7 ki te 7.
8x+7=2x-x-y
Pahekotia te 9x me -x, ka 8x.
8x+7=x-y
Pahekotia te 2x me -x, ka x.
x-y=8x+7
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
-y=8x+7-x
Tangohia te x mai i ngā taha e rua.
-y=7x+7
Pahekotia te 8x me -x, ka 7x.
\frac{-y}{-1}=\frac{7x+7}{-1}
Whakawehea ngā taha e rua ki te -1.
y=\frac{7x+7}{-1}
Mā te whakawehe ki te -1 ka wetekia te whakareanga ki te -1.
y=-7x-7
Whakawehe 7+7x ki te -1.
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