Whakaoti mō x
x=2\left(y+10\right)
Whakaoti mō y
y=\frac{x-20}{2}
Graph
Tohaina
Kua tāruatia ki te papatopenga
x-20=2y
Me tāpiri te 2y ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=2y+20
Me tāpiri te 20 ki ngā taha e rua.
-2y-20=-x
Tangohia te x mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
-2y=-x+20
Me tāpiri te 20 ki ngā taha e rua.
-2y=20-x
He hanga arowhānui tō te whārite.
\frac{-2y}{-2}=\frac{20-x}{-2}
Whakawehea ngā taha e rua ki te -2.
y=\frac{20-x}{-2}
Mā te whakawehe ki te -2 ka wetekia te whakareanga ki te -2.
y=\frac{x}{2}-10
Whakawehe -x+20 ki te -2.
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