Whakaoti mō x
x=\frac{y-7}{2}
Whakaoti mō y
y=2x+7
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x+7=y
Me tāpiri te y ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
2x=y-7
Tangohia te 7 mai i ngā taha e rua.
\frac{2x}{2}=\frac{y-7}{2}
Whakawehea ngā taha e rua ki te 2.
x=\frac{y-7}{2}
Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.
-y+7=-2x
Tangohia te 2x mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
-y=-2x-7
Tangohia te 7 mai i ngā taha e rua.
\frac{-y}{-1}=\frac{-2x-7}{-1}
Whakawehea ngā taha e rua ki te -1.
y=\frac{-2x-7}{-1}
Mā te whakawehe ki te -1 ka wetekia te whakareanga ki te -1.
y=2x+7
Whakawehe -2x-7 ki te -1.
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