Whakaoti mō x
x=-\frac{y}{2}+35
Whakaoti mō y
y=70-2x
Graph
Tohaina
Kua tāruatia ki te papatopenga
y=5x+70-7x
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te 10-x.
y=-2x+70
Pahekotia te 5x me -7x, ka -2x.
-2x+70=y
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
-2x=y-70
Tangohia te 70 mai i ngā taha e rua.
\frac{-2x}{-2}=\frac{y-70}{-2}
Whakawehea ngā taha e rua ki te -2.
x=\frac{y-70}{-2}
Mā te whakawehe ki te -2 ka wetekia te whakareanga ki te -2.
x=-\frac{y}{2}+35
Whakawehe y-70 ki te -2.
y=5x+70-7x
Whakamahia te āhuatanga tohatoha hei whakarea te 7 ki te 10-x.
y=-2x+70
Pahekotia te 5x me -7x, ka -2x.
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